CMMG 8.6 Blackout 12.5in Barrel Sub-Assembly, 4140 Chrome Moly, Black Nitride Finish 33D430C

SKU: FLX-170859

Vendor CMMG
Regular price $254.98
Sale price $254.98 Regular price $269.99
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Product Description

Kick off your 8.6 Blackout AR-10/LR-308 pattern build with the CMMG Barrel Sub-Assembly (33D430C). This 12.5-inch 4140 chrome moly (4140CM) barrel is finished in corrosion-resistant black nitride for enhanced durability and long-term performance. Designed for short-barreled setups, it features a pistol-length gas port location and is compatible with CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers. It also accepts 0.750-inch diameter gas blocks and uses standard 5/8x24 muzzle threads for common .30-caliber devices.

Product Highlights

  • 12.5-inch 8.6 Blackout barrel sub-assembly for compact AR-10/LR-308 pattern builds
  • Black nitride finish helps resist corrosion and wear for hard-use reliability
  • 4140 chrome moly (4140CM) steel construction for strength and longevity
  • Compatible with CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers
  • 0.750-inch gas block journal and pistol gas port location to support short-barreled cycling

Specs

  • Brand: CMMG
  • Manufacturer Part Number: 33D430C
  • UPC: 810148628734
  • Caliber: 8.6 Blackout
  • Barrel Length: 12.50 in
  • Material: 4140 Chrome Moly Steel (4140CM)
  • Finish: Black Nitride
  • Gas System: Pistol (gas port location)
  • Gas Block Journal: 0.750 in
  • Muzzle Thread: 5/8x24
  • Twist Rate: 1:3
  • Compatibility: CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers

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