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CMMG, Inc AR-15 Lower Reciever Parts Kit
As Low As $49.99 Save Up to 22%
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Most Helpful Positive Review CMMG LPK is Amazing
I used this CMMG LPK on an Anderson lower and it went together like clockwork! Even the dreaded bolt release roll-pin went in without heartburn, lol! I'd buy this LPK again and again for all other builds that I have planned!
Most Helpful Negative Review Missing a Critical Part
I bought a CMMG Lower Parts Kit to build out my AR lower. Some of the parts required a bit fitting, but overall all went well with that first build. So, I ordered a second CMMG kit to complete my last remaining stripped lower. But, when the second CMMG Lower Parts Kit arrived, the hammer spring w...
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Good lower receiver parts kit for the money.

by Shooter, Verified Owner from CO, United States Written on December 26, 2025
All parts came in neat in package. It was well organized packaging so I could see what was in it.
Best Used for:
  • Building a new lower receiver or as spare parts
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG Lower Parts Kit

by johnchip, Verified Owner from CT, United States Written on September 2, 2025
The CMMG LPK is a go-to for my builds. I always keep a couple of these in my spare parts box. It's a great lower parts kit, comes with everything you need to build out your stripped lower (for me, minus the FCG and grip). I really like CMMGs take down pins and the rest of the parts are pretty good as well. For the price you can beat it. I highly recommend this LPK.
Would recommend: Yes
Was it helpful to you? Yes | No

Good quality parts kit - no complaints

by Henry D in NC, Verified Owner from NC, United States Written on August 12, 2025
No complaints. Good quality parts kit. Everything was in spec and fit an Aero lower perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG LPK - the go to

by dodgerr, Verified Owner from NC, United States Written on May 3, 2025
This LPK is always available, easy to install, functions properly, and is mil spec durable. Buy with confidence.
Would recommend: Yes
Was it helpful to you? Yes | No

solid LPK - Does whatnits supposed to

by Dan, Verified Owner from FL, United States Written on January 3, 2025
This is my preferred lower parts kit for my Silencerco lowers. I’ve never had missing parts as reported by some other users (Though I wonder if that was a shipping issue)

Buy this kit with confidence.
Would recommend: Yes
Was it helpful to you? Yes | No

Works as it should

by Cmmg parts, Verified Owner from CO, United States Written on December 15, 2024
Quality parts, just what you would expect. Comes well organized and packaged
Would recommend: Yes
Was it helpful to you? Yes | No

great lower parts kit

by D.Newell, Verified Owner from GA, United States Written on July 26, 2023
used in an Anderson manufacturing ar15 lower receiver. went together perfectly and smoothly as it should with no problems. everything you need to get your lower slapped together right. the price is very good for a parts kit and it arrived fast as always!
Pros:
  • Quality
  • Cheap
Cons:
  • None
Would recommend: Yes
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

A Fantastic Basic Parts Kit.

by The Ol Boy Roy, Verified Owner from WA, United States Written on April 7, 2023
I was building a rifle from scratch, but I had planned to use a drop in trigger. So I didn't want Parts like the trigger group or too many spare parts. I would say that, despite just being standard Parts, they just seem a little more high quality than a basic Milspec kit. Just subtle details that make the firearm more pleasurable to use. Still, I didn't buy it because they are slightly nicer. I just trust CMMG to make parts that fit well and work. While there are cheaper kits that can do the job, these do inspire confidence. If you need a minimal parts kit that you can fully trust, this might be the right kit to buy.
Pros:
  • reliable
  • Well organized
  • Good tolerances
Cons:
  • None
Best Used for:
  • Replacement parts
  • Building a rifle
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great to have extra spare parts for an AR15

by Six, from CA, United States Written on November 21, 2022
Lo e the deal. Good to have spare parts for an AR15.You really can't buy these AR15 lower parts in the stores,just a few. Built another and of course the spring flies out somewhere. I'm sure it's happened to many of us. Lol
Would recommend: Yes
1 of 1 found the following review helpful.
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Everything fits perfectly

by Jeffers, Verified Owner from FL, United States Written on July 5, 2022
These mil-spec parts all fit perfectly in my lightweight build. Finish and size were all within spec. I know CMMG makes high quality products and that was the main influence in my choice to use them. The price isn’t the lowest but doesn’t break the bank. I’m sure I could have paid 20 bucks less, but 20 bucks is a small price to pay for peace of mind.
Would recommend: Yes
Was it helpful to you? Yes | No
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