Attachment Method: M-LOK - Product Line: AR-10 - Product Category: Tactical - Caliber: 6.5 Grendel - Barrel: HB SST Triple Lapped - Barrel Length: 20 - Muzzle Device: Flash Suppressing Compensator - Front Sight Base: Full-Length MIL-STD 1913 Rail - Handguard: 15 Free-Floating Tactical - Stock: MBA-1 Light Weight Precision Adjustable - Upper Receiver: Forged Flat-Top with MIL-STD 1913 Rail 7075-T6 Aluminum - Lower Receiver: Forged 7075-T6 Aluminum - Safety: Ambidextrous - Trigger: Two Stage Precision - Charging Handle: Raptor Ambidextrous - Finish: Hard Anodized Aluminum Manganese Phosphated Steel - Length: 42.3 Collapsed / 43.3 Extended - Included: One 25-Round Magpul PMAG Magpul MBUS Owner’s Manual