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Most AR pistols in this size range fight a constant battle with gas blowback. Short barrels mean violent gas systems, dirty actions, and a face full of carbon when you run them hard or suppressed. The Adams Arms P2 sidesteps all of that with a low profile adjustable short stroke piston system that vents gas at the block instead of piping it back into the receiver. The result is an action that stays cleaner and cooler, and an adjustable setting that lets you tune the gun for suppressed use or keep it running when things get grimy.
The heart of this setup is a full-auto rated one-piece bolt carrier with an integral piston strike face, built to take the pounding a piston gun dishes out. The 7.5-inch heavy contour barrel is 4150 chrome moly vanadium steel with a QPQ Melonite black nitride finish inside and out, so corrosion resistance and barrel life are covered. A 1:7 twist stabilizes heavier 5.56 loads, M4 feed ramps keep feeding smooth, and the muzzle wears an A2 flash hider on standard 1/2-28 threads if you want to swap in your own device or mount a can.
A lot of pistols in this class need a few hundred bucks of parts before they feel finished. The P2 shows up wearing an SBA3 pistol brace, Defiance flip-up front and rear sights, an Ergo grip, and the Adams Arms AARS free float M-LOK handguard that covers the piston system while leaving plenty of real estate for lights and accessories. The ambidextrous safety selector and charging handle are a nice touch for lefties or anyone who trains support side.
At 5.5 pounds and 23.5 inches overall, this is an easy gun to maneuver in a truck, a hallway, or a blind. It feeds from standard AR magazines and ships with a 30-rounder, so spares are cheap and everywhere. If you want a compact 5.56 that stays clean when your buddies' direct impingement guns are getting sluggish, the P2 makes a strong case for itself.
Instead of routing hot gas back through a tube into the bolt carrier, the P2 uses a short stroke piston that vents gas forward at the gas block. That keeps carbon and heat out of the receiver, so the action stays cleaner, cooler, and needs less frequent scrubbing. The piston is also adjustable, which is a big plus if you plan to run a suppressor.
Yes, and this is where the piston system really earns its keep. The muzzle has standard 1/2-28 threads under the A2 flash hider, so most 5.56-rated cans and mounts will work. The adjustable gas setting lets you dial the system down for suppressed shooting, which cuts back pressure and keeps the gun from getting overgassed.
It does. The P2 is built on a standard AR-pattern lower with M4 feed ramps, so it feeds from any mil-spec AR-15 magazine. One 30-round magazine comes with the pistol, and spares from PMAG, Lancer, or aluminum GI-style mags will all run fine.
It gives up some velocity compared to a 16-inch rifle, no way around that, but inside 100 to 150 yards it is plenty effective and the compact size is the whole point. The 1:7 twist stabilizes heavier bullets like 62 and 77 grain loads, which hold up better out of short barrels. For home defense, truck gun duty, or tight-quarters work, the trade is worth it.
| UPC | 812151024503 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FGAA-00427 |
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