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CMMG, Inc Receiver Extension Kit, Carbine Length
$107.86 $76.59 Save 29%
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CMMG buffer tube and spring

by Steve D, Verified Owner from MS, United States Written on March 7, 2024
Great product (CMMG, of course its great) and did what it's supposed to do.
Pros:
  • value
  • Quality
Cons:
  • None
Best Used for:
  • Any Ar build where value overrides brand big so-called "Gucci" brands
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG buffer tube and spring

by Steve D, Verified Owner from MS, United States Written on March 7, 2024
Great product (CMMG, of course its great) and did what it's supposed to do.
Pros:
  • value
  • Quality
Cons:
  • None
Best Used for:
  • Any Ar build where value overrides brand big so-called "Gucci" brands
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG buffer tube and spring

by Steve D, Verified Owner from MS, United States Written on March 7, 2024
Great product (CMMG, of course its great) and did what it's supposed to do.
Pros:
  • value
  • Quality
Cons:
  • None
Best Used for:
  • Any Ar build where value overrides brand big so-called "Gucci" brands
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG AR-15 Receiver Extension Kit-CAR

by Chris, from KY, United States Written on September 7, 2020
Product is great quality, and it shipped pretty quickly. I’ve normally had a good experience with Optics Planet so that’s why I went with them after the Receiver Kit was assumed in-stock, which at the moment is a big obstacle for most people trying to find odd and end AR parts right now at their local shops. This CAR extension is going on my 10.5 SBR build To replace the PRS Gen III I had on it that I’m now putting on my Armalite AR 10 build. Shop around to find the parts you’re needing right now, but for the most part Optics Planet will normally have what you’re looking for. Very satisfied
Would recommend: Yes
Was it helpful to you? Yes | No

Great product for a standard build

by Michael, Verified Owner from CA, United States Written on June 8, 2017
I've used these for two builds so far, they work as-advertised. I prefer to buy the extension tube, spring, and buffer together for basic builds so I don't need to do the leg work or forum research to find an optimal combinations for a given rifle (you also tend to get a better deal in my experience). I did swap a third one of these out for an anti-tilt buffer on a lower that I wanted to pair with a piston upper, but that is sort of a special case where the upper was has a notorious failure mode to with special components. I'm happy with this extension tube set.
Would recommend: Yes
Was it helpful to you? Yes | No

Excellent Product for Your AR Build

by LesEldre, Verified Owner from OK, United States Written on December 29, 2015
I needed a receiver extension for my current AR-15 build. I have had great success using CMMG receivers so I decided to try their receiver extension to mount my Magpul CTR adjustable stock. The mil-spec extension kit was a perfect fit to the receiver and the Magpul CTR stock. There were no issues with the build. I highly recommend the CMMG receiver Extension Kit. Be sure to order the correct part (milspec or commercial size).
Pros:
  • cost
  • Perfect Fit
  • Appearance
Cons:
  • none... yet
Would recommend: Yes
Was it helpful to you? Yes | No
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