Barrel and BCG Kit, 8" 4140CM, SBN, 9mm
Our 8" 9mm Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using our Patent Pending Radial Delayed Blowback System™. Unlike typical direct blowback systems, Radial Delayed Blowback uses a bolt that is forced to rotate and unlock, slowing the BCG. This results in a lighter BCG for a lighter rifle, and less felt recoil than a straight blowback system.
Our Barrel and Bolt Kits are designed to work exclusively with mil-spec AR-15 upper receivers with a modified ejection port, like our MkG/MkGs upper, and most mil-spec AR15 lowers when used with 9 AR Conversion mags as well as our MkGs Mk17 and Mk9* lowers. Other manufacturers’ receivers may work, but we cannot guarantee function or reliability.
*Older Mk9 lowers will require one of our retrofit kits to convert it to a Radial Delayed Blowback compatible lower, instead of Traditional Blowback.
All CMMG products come with our Lifetime Quality Guarantee.
TECHS SPECS
| CALIBER | 9MM |
| OPERATING SYSTEM | RADIAL DELAYED BLOWBACK |
| BARREL LENGTH | 8 |
| BARREL TWIST | 1:10 |
| BARREL CONTOUR | MT |
| BARREL MATERIAL | 4140CM |
| BARREL TWIST | 1:10 |
| MUZZLE THREAD | 1/2 X 28 |
| GAS PORT LOCATION | N/A |
| GAS BLOCK | N/A |
| FINISH | SBN |
| WEIGHT | 1.7 |
4 Reviews
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Best 9mm AR build investment
Heart of Texas armory has the cheapest price and fastest fulfillment for this. Very smooth and reliable 9mm BCG, with no lower mods needed
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Satisfied customer
Great product for a good price. Fast shipping made it even better.
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Awesome!
Good product. Fast shipping and great customer service. Definitely recommend this product and the site.
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Awesome!
Good product. Fast shipping and great customer service. Definitely recommend this product and the site.
