The Adams Arms P1 pistol in 5.56 NATO with an 11.5-inch barrel and black finish (brand part no. FGAA-00425) is a semi-automatic AR-pattern pistol built around a short-stroke piston system for shooters who want a cleaner-running action than a standard direct-impingement AR. Adams Arms cuts the 4150 chrome moly vanadium steel barrel and seals it in a QPQ Melonite/black nitride finish, pairing it with an M4 handguard, an A2 flash hider, and a Picatinny-railed gas block with three adjustable settings. The pistol ships with an A2 grip and a 30-round magazine. Among AR pistols, the P1 favors shooters who want piston-driven reliability in a compact platform.

Key Specifications

• Chambered in 5.56 NATO.
• Feeds from a 30-round magazine.
• Features an 11.5-inch barrel.
• Barrel steel is 4150 chrome moly vanadium, sealed in QPQ Melonite/black nitride.
• Operating system is a short-stroke piston, not direct impingement.
• Gas block is Picatinny-railed with three adjustable settings.
• Muzzle device is an A2 flash hider.
• Built with an M4 handguard and an A2 grip.

Frequently Asked Questions

What operating system does this pistol use? A short-stroke piston system rather than direct impingement.

Is the gas block adjustable? Yes, it offers three adjustable settings.

Buy the Adams Arms P1 Pistol

Piston-driven reliability in a compact 5.56 AR pistol is exactly what the P1 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.