The LF308 Battle Rifle is an optics ready aluminum frame rifle. LF308 Battle Rifle features a 18 4150 Chrome Moly Vanadium Steel with a free-floating M-LOK handguard a single-stage mil-spec trigger. The LF308 Battle Rifle is built for your everyday freedom loving American. This rifle is ready to get down and dirty. - Weight 8.3 lbs - Barrel Length 18 - Barrel Material 4150 Chrome Moly Vanadium Steel - Barrel Finish Parkerized - Barrel Profile SOCOM - Chamber .308 Winchester - Twist Rate 1 in 10 - Extension M4 - Gas System Mid-Length - Gas Block Type Low Profile Adjustable .750 Diameter - Receiver Set Precision CNC machined Billet 6061 T6 Aluminum - Muzzle Device A2 Flash Hider - Muzzle Threads 5/8x24 - Receiver Style M4 Flat top with feed ramps - Receiver Finish Cerakote - Forward Assist Yes - Dust Cover Yes - Handguard Style LFA 15 M-Lok Free Float - Bolt Steel 9310 Steel - Bolt Carrier Steel 9310 - Staked Gas Key Yes - Fire Control Group Fire Control Mil-Spec - Buffer Tube 6061 T-6 Aluminum Mil-Spec Tube - Adjustment 6-position collapsible - Stock Rogers Super Stock with QD - Grip Thril Rugged Tactical Grip - Safety Mil-Spec Safety - Magazine (1) 20-Round Magazine (where allowed by law) - LFA is currently transitioning rifle furniture to the products in the description. The grip and stock are different from the present picture. - Gas block adjustment screw & set screw use a 0.050 hex key.