Primary Weapon Systems MK116 MOD 2-M .223 Wylde Complete Upper Receiver - 16" - FRC Comp

Designed for shooters seeking a piston-driven AR-15 upper with controlled gas operation and suppressor compatibility, the Primary Weapon Systems MK116 MOD 2-M .223 Wylde Complete Upper Receiver is a 16-inch complete upper assembly intended for accuracy, reliability, and adaptable performance. This upper from Primary Weapons Systems operates on a long-stroke piston system paired with a three-position adjustable gas regulator, separating combustion gases from the receiver to reduce carbon buildup while maintaining stable cycling with a wide range of ammunition and suppressed firing. The .223 Wylde chamber supports both .223 Remington and 5.56 NATO cartridges while maintaining precise performance, and a 16.1-inch barrel with a 1:8 twist rate stabilizes multiple projectile weights. A PWS FRC 2-port compensator moderates recoil and muzzle rise while providing compatibility with Rearden Atlas suppressor mounts, and the PicLok handguard combines Picatinny and M-LOK mounting surfaces for rifle accessories. Made in USA.

Features:

• AR-15 complete upper receiver
• .223 Wylde chamber supports .223 Remington and 5.56 NATO
• 16.1" barrel with 1:8 twist rate
• PWS long-stroke piston operating system
• 3-position adjustable gas system for suppressor tuning
• Sub-MOA accuracy potential with quality ammunition
• PWS FRC 2-port compensator compatible with Rearden Atlas mounts
• PicLok handguard with integrated Picatinny and M-LOK mounting
• Radian Raptor ambidextrous charging handle
• Approximate weight: 4.6 lbs
• Made in USA