Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver MK1-M2U-300BLK-9 Caliber: .300 AAC Blackout, Barrel Length: 9.75 in, $100.00 Off w/ Free S&H

As one of the most popular modern calibers, .300 AAC Blackout is a stand-out choice for pistols. If you're looking AR15 Upper Receivers to start your build, the Primary Weapons Systems MK109 MOD 2-M 9.75-inch Upper Receiver is an excellent choice. With a pistol-length gas system and Radian Raptor charging handle, this .300 BLK pistol upper receiver weighs only 5.6 pounds, so it doesn't add much weight to the overall build. It is the perfect length for both short- and medium-range engagements, and is equipped with Picatinny rails on top and their proprietary PicLock M-LOK system on the handguards. This lets you easily attach a variety of optics, laser sights, weapon lights, and other attachments to customize your build. Pick one up today to start your build!

Features of Primary Weapons Systems MK109 MOD 2-M Pistol 9.75 inch .300 AAC Blackout Upper Receiver:

• 9.75-inch Barrel
• Matte Black Finish
• Includes Radian Raptor Ambidextrous Charging Handle
• Pistol-Length Gas System
• Chambered in .300 BLK

Features of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver:

• PWS Long Stroke Piston System: Renowned for reliability and reduced fouling, with adjustable gas settings for optimal performance.
• Suppressor Optimized: Provides enhanced suppressor performance by minimizing back pressure, reducing gas blowback, and optimizing gas flow for a cleaner and more comfortable shooting experience.
• 300 BLK Chambering: Meticulously designed for outstanding accuracy and reliability for both super and subsonic 300 BLK ammunition.
• Lightweight Design: The MK109 uppers weighs just 3.5 lbs, ensuring superior maneuverability without compromising performance.
• Barrel: 9" 300 BLK barrel with a 1:6 twist rate, delivering exceptional accuracy and versatility when firing most 300BLK rounds on the market.
• PWS FRC 2-Port Compensator: A suppresor compatible compensator that expertly mitigates recoil, muzzle rise and is compatible with the Rearden Atlas suppressor mounting system.
• Innovative PicLok™ Handguard: Combining both Picatinny and MLOK into one for mounting accessories, balancing ergonomics and functionality.

Package Contents:

• Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver

What firearm models does the manufacturer say Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver is compatible with?