CMMG AR-15 Lower Parts Kit

The CMMG AR-15 Lower Parts Kit has all of the components necessary to turn your stripped AR-15 lower receiver into a functional AR-15 lower. These parts are what controls the firing sequence, magazine retention, selector operation, and ensures a reliable rifle once fully assembled. CMMG has taken the additional step to put the small parts into color coded bags, making identification of similar looking parts easy for first time builders.

In stock


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American Owned and Operated


20+ Years In Business

Returns Accepted

Ships from Pennsylvania


The CMMG AR-15 Lower Parts Kit is a premium lower parts kit featuring parts that are all Made int the USA. CMMG has a solid decade of production experience with the AR-15 platform that includes not just lower parts kits, but complete rifles in various configurations unique to the market. Through this long track record of production experience, CMMG has built up manufacturing methods for parts that result in a superior product that meets or exceeds current military standards.

Each CMMG AR-15 Lower Parts Kit has all of the components necessary to build a functional lower receiver when paired with your AR-15 stripped lower receiver. When assembling your lower receiver from a stripped lower and a CMMG lower parts kit, you will gain insight into how your AR-15 rifle operates and functions. This new knowledge is not only satisfying but can be applied to help troubleshoot any functional issues with your AR-15 after assembly or anytime in the future.

  • Complete AR-15 Lower Parts Kit
  • Made in the USA
  • Color Coded Packages
  • Easy to Identify Parts and Install

More Information

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Customer Reviews

Great Transaction
Review by Leander J.
Verified Buyer
I bought two of these lower parts kits. Used one for repair, other is stored in my spares box.
Exactly as described.
Review by Melinda V.
Verified Buyer
Cheapest price I could find that was in stock. Shipping was speedy with UPS.
First-Rate Manufacturing
Review by Lin H.
Verified Buyer
Price is excellent and shipping was quick.
Excellent Price
Review by Jwan V.
Verified Buyer
These parts are awesome. Would definitely buy again.
Review by Waymon W.
Verified Buyer
The spare parts are good. Would buy again.
Exactly as pictured.
Review by Brooklyn U.
Verified Buyer
Functions great as a replacement lower parts kit for my AR15.
Perfect for me
Review by Ajay L.
Verified Buyer
Cheapest price I could find that was online. Shipping was quick via UPS.
Nicely Organized
Review by Pete
Verified Buyer
Color coded bags with matching parts lists save time trying to figure out were everything goes. Decent quality parts and reasonably priced. If you are assembling your first lower this kit is highly recommended.
Thanks keepshooting
Review by Jacobie B.
Verified Buyer
Finest AR15 lower parts kit for the buck shipped by a terrific company. Thank you keepshooting!
Good Order
Review by Edan S.
Verified Buyer
5 Star
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