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Product Code: AA-FGAA-01358 Categories: , ,

Adams Arms piston system increases reliability, reduces maintenance, and decreases felt recoil. Their system is simple and intuitive, making it easy to clean and take care of.


Product Description

Adams Arms Upper 11.5″ Carbine Length 5.56 – Piston

The Adams Arms PZ model is the perfect platform for shooters who enjoy building and customizing their rifle. The PZ model includes our Picatinny Railed Gas Block with 3 adjustable settings and M4 furniture. The PZ is your Piston Driven foundation, ready to be customized to fit your needs.


Upper Receiver: A4 Flat-Top, Forged

Barrel Length: 11.5″

Barrel Contour: Govenment

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

Weight: 3.7 lbs

UPC: 812151023872

Lifetime Warranty: Yes



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Additional information

Weight3.7 lbs