Pws Mk109 Mod 1-m Upper 300blk 9.75

The Pws Mk109 Mod 1-m Upper 300blk 9.75 is a specialized solution for shooters requiring a compact platform with professional-grade reliability. Designed specifically for the .300 Blackout cartridge, this upper receiver is ideal for those who prioritize consistent cycling in short-barreled configurations. It serves as a premium upgrade for any standard AR-15 lower receiver, making it a great choice for tactical applications.

At the heart of this system is the Primary Weapons Systems long-stroke piston design, which significantly reduces carbon fouling and heat buildup within the receiver. The 9.75-inch barrel is precision-engineered for the .300 BLK cartridge, ensuring full powder burn and consistent velocities with both supersonic and subsonic loads. This assembly features a free-float M-LOK handguard for rigid accessory mounting.

The Pws Mk109 Mod 1-m Upper 300blk 9.75 excels when paired with a silencer, providing an excellent platform for tactical engagements. Its design ensures that internal components stay cleaner and cooler compared to standard gas systems, making it a reliable option for various shooting scenarios. This upper receiver assembly is an ideal choice for those building a discreet truck gun or a high-performance home defense tool.