Adams Arms AR-15 P2 Adjustable Gas Piston Pistol Upper Receiver Assembly 5.56x45mm NATO 11.5” Barrel

Upgrade your AR pistol or SBR build with the Adams Arms AR-15 P2 Adjustable Gas Piston Pistol Upper Receiver Assembly. Chambered in 5.56x45mm NATO with an 11.5-inch barrel, the P2 series combines tactical maneuverability with Adams Arms’ short-stroke gas piston system for unmatched reliability, reduced recoil, and clean-running operation.

The micro-adjustable gas block allows you to easily fine-tune gas flow for suppressed shooting, unsuppressed firing, or varying ammunition loads. Built with a free-floating M-LOK handguard, melonite-finished barrel, and forged 7075-T6 aluminum upper receiver, this complete upper delivers exceptional durability, cooler receiver temperatures, and minimal carbon buildup compared to traditional direct impingement systems.

• Caliber: 5.56x45mm NATO (.223 Remington compatible)

• Barrel Length: 11.5 Inches

• Gas System: Short-Stroke Adjustable Gas Piston System

• Handguard: Free-Floating M-LOK Rail System

• Finish: Corrosion-resistant Melonite/Nitride barrel finish

• Use Case: AR pistol builds, Short-Barreled Rifle (SBR) tactical setups, and suppressed shooting applications

Features

Free float M-LOK handguard
Extended A2 flash hider
P-Series Adjustable Micro gas block
Short stroke gas piston
Ambidextrous Charging Handle
Short stroke free floating piston system
Self-cleaning and corrosive resistant piston coating
Carbon and gases are expelled forward
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Made In United States of America