Primary Weapons Systems PWS MK109 MOD1 UPPER 300BLK

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Primary Weapons Systems
$ 1,999.95 $ 999.99
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The MOD1 MK109 Primary Weapons upper in caliber 300 Blackout features MLOK handguard, Triad compensator, 41V50 FNC LIFE HD barrel, PWS long-stroke piston system, FNC LIFE HD bolt carrier & Radian Raptor LT charging handle.

PWS advises the use of supersonic 110 to 130 grain ammo on this platform. Running ammunition heavier than 130 grain can adversely affect cycling unless a suppressor is utilized.
Technical Specs
  • 3lb 10oz weight @ 19.2 inches OAL
  • PWS Triad compensator
  • 9.75 inch 41V50 FNC LIFE HD barrel
  • 1:8 twist threaded 5/8X24
  • 8.9 inch87/ MLOK handguard
  • Pistol-length long-stroke piston system
  • FNC LIFE HD bolt carrier
  • Radian Raptor LT charging handle
  • Limited lifetime warranty
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