BARREL SUB ASSM 16 MT 4140CM SBN 9MM COMP CMMG RDB BCG
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Aug 26, 2026
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Specifications
Description
Upper Group Dissent
Complete your pistol caliber carbine with a CMMG 9mm 16.1" Radial Delayed Blowback barrel. Made from 4140CM, each barrel has a salt bath nitride finish for maximum durability and corossion resistance.
Bolt Carrier Group Compatibility
Radial Delayed Blowback barrels feature a unique barrel extension and require the use of matching caliber CMMG RDB bolt carrier groups.
Lifetime Quality Guarantee
Every CMMG product is backed by a Lifetime Quality Guarantee against material and workmanship defects.
- Caliber: 9mm
- Operating System: Radial Delayed Blowback
- Barrel Length: 16.1
- Barrel Twist: 1:10
- Barrel Contour: MT
- Barrel Material: 4140CM, SBN
- Barrel Twist: 1:10
- Muzzle Thread: 1/2 x 28
- Gas Port Location: N/A
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