The Adams Arms P1 is the introductory model to the P-Series. This model features ergonomic mid-length handguards and the standard adjustable picatinny railed piston system. The P1 upper is perfect for any and all AR enthusiasts looking for a self-cleaning, piston driven upper that provides superior performance. Specifications: Upper Receiver: A4 Flat-Top, Forged Barrel Length: 16″ 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: Mid, Short Stroke Piston Operated Gas Block Diameter: 0.750″ Handguard: Magpul MOE Handguards Sights: None Weight: 4.46 lbs
New in Box
Finish Per Color
Manufacturer Part Number
P1 Upper 5.56
The Adams Arms P1 upper is a fantastic addition to your rifle 5.56 platform. This P1 features 7075-T6 hard coat anodized upper receiver, Mid-Length MOE handguards, and a railed Gas piston system. Save some green on your rifle build with this P1 upper!