Adams Arms P1 5.56/ .223 11.5" Upper

Adams Arms P1 5.56/ .223 11.5" Upper

The Adams Arms P1 model includes our Picatinny Railed Gas Block with 3 adjustable settings and M4-style furniture. The P1 is your Piston Driven foundation, ready to be customized to fit your needs.

Specifications:
- Upper Receiver: A4 Flat-Top, Forged
- Barrel Length: 11.5?
- Barrel Contour: Government
- 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
- Lifetime Warranty: Yes