The Adams Arms P1 pistol features M4 handguard, with a 4150 Chrome Moly Vanadium Steel barrel material sealed in a QPQ Melonite/black nitride finish. This pistol features A2 flash hider muzzle device and a carbine, short stroke piston operated gas system. It is built with an Picatinny railed gas block with 3 adjustable settings, an A2 grip and KAK Blade pistol brace stock.