Description
P1 Upper Features
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.

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P1 Upper Specifications
Caliber: 5.56x45mm NATO
Model: P1
Barrel Length Range: 16″ to 16.99″
Sights: None, Optic Ready
Muzzle: A2 Flash Hider
Firearm Fit: AR Platform
Handguard Finish: Black
Handguards: M4
Receiver Finish: Black
Receiver Material: Aluminum
Thread Pattern: 1 / 2″-28 tpi
Twist: 1:7″
Weight: 4.10 lbs
Barrel Description: 4150 Chrome Moly Vanadium
Barrel Finish: Black Nitride
Barrel Material: Steel
Barrel Length: 16″