Note: This product must be shipped to an Federal Firearms Licensed Dealer(FFL Dealer)

The Adams Arms P1 model is the perfect platform for shooters who enjoy building and customizing their rifle. The P1 model includes our Picatinny Railed Gas Block with 3 adjustable settings and M4 furniture. The P1 is your Piston Driven foundation ready to be customized to fit your needs. - Upper Receiver: A4 Flat-Top Forged - Barrel Length: 16 - Barrel Contour: M4 - Barrel Material: 4150 Chrome Moly Vanadium Steel - Muzzle Thread Pattern: 1/2-28 - Chrome Lined: No - Barrel Finish: QPQ Melonite / Black Nitride - Twist Rate: 1 in 7 - Chamber: 5.56x45mm NATO - M4 Feed Ramps: Yes - Bolt Carrier: Full-Auto Rated 1-Piece w/Integral Piston Strike Face - Muzzle Device: A2 Flash Hider - Gas System Length: Carbine Short Stroke Piston Operated - Gas Block Diameter: 0.750 - Handguard: M4 Handguards - Sights: None - Grip: A2 Grip - Trigger: Standard G.I. - Stock: 6-position Collapsible - Weight: 6.2 lbs - OAL: 32.5 collapsed