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Questions & Answers
Is this 16inch overall barrel length with the pinned and welded muzzle device?

Yes it is. That’s why it is pin & welded to make the over all length 16”

by nate, Verified Owner, January 31, 2026
Customer Reviews
Most Recent Reviews
EXCELLENT UPPER RECEIVER GROUP by XavierP, Verified Owner, May 22, 2026
Quality is awesome. It isn’t a carbine length gas system, as stated on the specifications, mine came in with a Pistol length, i’ll take it…Even better for both supers and subs even unsuppressed. Really nice URG.
Read 1 Review
Caliber:
.300 AAC Blackout
Overall Length:
23.8 in
Barrel Length:
14.5 in
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-7
Firearms Threads Per Inch:
5/8x24
Handguard Type:
M-LOK ATLAS S-ONE
Muzzle Device:
CMMG ZEROED SVD Brake Pinned & Welded
Finish:
Matte
Color:
Black
Handguard Length:
13.5 in

Code: 2CM-URC-30BD30AAB-30BD30A-AB

MPN: 30BD30A-AB

UPC: 810148622008

List: $609.95Save 15%
$519.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver

The CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver was made to be the best product for any person in need of an exceptional option..image

Established working with some of the most durable and dependable components available, these AR15 Upper Receivers from CMMG will present you with something that gives you years of consistency.

CMMG has been making superior quality merchandise for a number of years, and the CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver is their very own way of demonstrating how much they care.

Right here at OpticsPlanet, we ensure that it is our responsibility to purchase the perfect product for all of your requirements, and exhibiting the CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver is something that we are delighted to offer.

Specifications for CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver:

Manufacturer: CMMG
Caliber: .300 AAC Blackout
Overall Length: 23.8 in
Barrel Length: 14.5 in
Gas System Length: Carbine Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 5/8x24
Handguard Type: M-LOK ATLAS S-ONE
Muzzle Device: CMMG ZEROED SVD Brake Pinned & Welded
Finish: Matte
Color: Black
Fabric/Material: Steel
Handguard Length: 13.5 in
Gun Make: AR Platform
Gun Model: AR-15
Weight: 3.9 lb
Bolt Carrier Group Included: No
Charging Handle Included: No

Package Contents:

  • CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver

CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver Orderable Models

List of Orderable Models

  • CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver, No BCG or CH, AR-15, Black, 30BD30A-AB , MPN: 30BD30A-AB , UPC: 810148622008 , Code: 2CM-URC-30BD30AAB-30BD30A-AB
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Last updated 2026-11-04 UTC.