Aero Precision Atlas R-One, M-LOK, Handguard, 15", Anodized Finish, Olive Drab Green, Fits AR10 Rifles APRA538772A

Aero Precision Atlas R-One, M-LOK, Handguard, Anodized Finish, Black, 15", Fits AR10 Rifles APRA538705A

Aero Precision Atlas S-One, M-LOK Handguard, Fits AR10 Rifles, 12.7" Long, Anodized Finish, Black APRA538104A

Aero Precision Atlas R-One, M-LOK, Handguard, Anodized Finish, Flat Dark Earth, 15", Fits AR15 Rifles APRA500715A

Aero Precision Enhanced Carbine Buffer Kit, Buffer Tube Complete Assembly, Anodized Finish, Olive Drab Green, Fits AR10 APRH101463C

Aero Precision Enhanced Carbine Buffer Kit, Buffer Tube Complete Assembly, Anodized Finish, Olive Drab Green, Fits AR15 APRH101462C

Aero Precision Enhanced Carbine Buffer Kit, Buffer Tube Complete Assembly, Anodized Finish, Kodiak Brown, Fits AR10 APRH101461C

Aero Precision Enhanced Carbine Buffer Kit, Buffer Tube Complete Assembly, Black, AR-10 APRH101248

The ATLAS R-ONE is the newest addition to the Aero Precision Handguard lineup. Machined from 6061-T6 Aluminum the R-ONE line of handguards are designed with size and weight in mind providing the perfect handguard for your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. - Available in M-LOK® profiles with 12.7 and 15 options. - ATLAS - The new Aero Taper Lock Attachment System (ATLAS) is both functional and aesthetically pleasing. It features 2 mirrored tapered locking nuts that provide evenly distributed clamping pressure across a custom engineered barrel nut with use of a turnbuckle screw. A ratcheting detent further secures the design while providing positive registration during installation. By design the even pressure of the ATLAS system avoids distortion of the handguard often seen with current applications during installation. - All hardware mounting parts are included with the purchase of an ATLAS Handguard. - Lightweight By Design - M-LOK Handguard Weights: 12.7-8 oz / 15-9.07 oz - Mounting Hardware Weight: 4.72 oz (same across all ATLAS Handguard options) - Features: - Full top picatinny rail for optional attachments - Quick disconnect sling socket at the 3 6 and 9 o’clock positions - Compatible with low profile gas blocks - 1.5 Inside diameter - Compatible with AR308 upper receivers and barrels - NOT Compatible with M5E1 Enhanced Upper Receivers - ATLAS Handguards are designed to match seamlessly with our M5 (.308) Threaded Upper Receivers. However they may not be compatible with billet upper receivers due to indexing tabs.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 15 MOD 4 Handguard - Anodized Black Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 10.6 MOD 4 Handguard - Kodiak Brown Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 11.4 MOD 4 Handguard - Kodiak Brown Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 12.7 MOD 4 Handguard - Kodiak Brown Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 13.5 MOD 4 Handguard - Kodiak Brown Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 15 MOD 4 Handguard - Kodiak Brown Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 10.6 MOD 4 Handguard - OD Green Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 11.4 MOD 4 Handguard - OD Green Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 12.7 MOD 4 Handguard - OD Green Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 13.5 MOD 4 Handguard - OD Green Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 15 MOD 4 Handguard - OD Green Anodized Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 10.6 MOD 4 Handguard - Anodized Black Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 12.7 MOD 4 Handguard - Anodized Black Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.

The Aero Precision Minimal Optical Deflection (MOD) 4 handguard seamlessly blends robust construction with an ergonomic form factor ensuring no compromises between the two. Machined from 6061-T6 aluminum the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load. - In addition to its premium engineering the MOD 4 handguard offers several quality-of-life improvements. A full-length 7-sided M-LOK interface allows the user to customize their build according to their preferences. The steel-reinforced QD sockets are a small but important detail enhancing the sheer strength of the sockets and ensuring they do not wear prematurely when interfaced with standard steel QD sling attachments. Installation of this handguard is simplified at the barrel nut as the need for timing has been eliminated and the barrel nut lug pattern matches mil-spec castle nuts removing the need for specialty tools. Finally the inclusion of two anti-rotation set screws adds redundancy and ensures a more tailored fit when the handguard is used with third-party upper receivers. - Features: - 6061-T6 aluminum construction - Steel barrel nut - 7 sided M-LOK - 4 steel-reinforced Quick Disconnect (QD) sockets - Internal Diameter: 1.2 - Compatible with low-profile gas blocks - Includes: - 11.4 MOD 4 Handguard - Anodized Black Finish - MOD 4 Barrel Nut - MOD 4 Mounting Hardware - NOTE: MOD 4 Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers and components from the PRO series. Additionally the MOD 4 handguards are compatible with Mil-Spec AR-15 upper receivers.