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CMMG .45ACP 5in Barrel and BCG Kit Color: Black, Finish: Matte, Fabric/Material: 4140CM, w/ Free S&H

Cmmg, Inc Cmmg Barrel W/bolt Kit .45acp 5'' Rdb Black
Cmmg, Inc Cmmg Barrel W/bolt Kit .45acp 5'' Rdb Black
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Cmmg, Inc Cmmg Barrel W/bolt Kit .45acp 5'' Rdb Black

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Questions & Answers
What is the thread size? Expert Answer

The CMMG .45ACP 5in Barrel and BCG Kit includes a .45 ACP, 1:16 twist, .578x28 threaded barrel.

by Ethan, Gear Expert, July 11, 2022
Is this bolt carrier ramped? Can you answer this question?
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Color:
Black
Finish:
Matte
Caliber:
.45 ACP
Barrel Length:
5 in
Barrel Profile:
Medium Taper
Barrel Twist Rate:
1-16
Flutes:
No
Gun Make:
AR Platform
Gun Model:
AR-15
Weight:
1.6 lb
Additional Features:
Threaded
Condition:
New
Firearms Threads Per Inch:
.578x28

Code: 2CM-ATB-45D69FA-45D69FA

MPN: 45D69FA

UPC: 815835019772

List: $449.95Save $39.96
$409.99

Product Info for CMMG .45ACP 5in Barrel and BCG Kit

The MkG 5 Barrel and BCG Kit in 45ACP allows you to build a Pistol Caliber Carbine using our Patent Pending Radial Delayed Blowback System. Unlike typical direct blowback systems, our RDB 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.image

MkG Barrel and Bolt Kits are designed to work exclusively with our MkG Lowers. Other manufacturers receivers may work, but they cannot guarantee function or reliability.

WARNING: California`s Proposition 65

Specifications for CMMG .45ACP 5in Barrel and BCG Kit:

Manufacturer: CMMG
Color: Black
Finish: Matte
Fabric/Material: 4140CM
Caliber: .45 ACP
Barrel Length: 5 in
Barrel Profile: Medium Taper
Barrel Twist Rate: 1-16
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Weight: 1.6 lb
Additional Features: Threaded
Condition: New
Firearms Threads Per Inch: .578x28
Dimensions: 1.90 X 1.95 X 14.75 in

Package Contents:

  • CMMG .45ACP 5in Barrel and BCG Kit

What firearm models does the manufacturer say CMMG .45ACP 5in Barrel and BCG Kit is compatible with?

The manufacturer suggests that CMMG .45ACP 5in Barrel and BCG Kit is compatible with AR-15

CMMG .45ACP 5in Barrel and BCG Kit Orderable Models

List of Orderable Models

  • CMMG .45ACP Barrel and BCG Kit, 5in 4140CM, SBN, Black, 45D69FA , MPN: 45D69FA , UPC: 815835019772 , Code: 2CM-ATB-45D69FA-45D69FA

CMMG .45ACP 5in Barrel and BCG Kit Unavailable & Discontinued Models

List of Unorderable Models

  • USED, CMMG .45ACP Barrel and BCG Kit, 5in 4140CM, SBN, Black, 45D69FA , MPN: 45D69FA-EDEMO , Code: 2CM-ATB-45D69FA-45D69FA-EDEMO-WP-F
  • DEMO, CMMG .45ACP Barrel and BCG Kit, 5in 4140CM, SBN, Black, 45D69FA , MPN: 45D69FA-DEMO , Code: 2CM-ATB-45D69FA-45D69FA-DEMO
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Last updated 2026-08-14 UTC.