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.

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American Owned and Operated


20+ Years In Business


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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
Overall Rating
Good Order
Review by Kameryn Y.
lower parts kits look great. Exactly what I needed.
Overall Rating
Exactly as described.
Review by Garfield O.
Leading AR15 lower parts kit for the price shipped by a awesome company. Thank you keepshooting!
Overall Rating
Thanks keepshooting
Review by Chima U.
Best price I could find that was in stock. Shipping was fast from UPS.
Overall Rating
Review by Jarmal R.
Satisfied with this AR15 lower parts kit.
Overall Rating
Great Item
Review by Clenton I.
Would Recommend this spare part
Overall Rating
Superb AR15 lower parts kit
Review by Cristopher T.
Received in two days after ordering. Will be back to buy from keepshooting.
Overall Rating
Review by Diedrick M.
Received in two days after buying. Will be back to buy from keepshooting again!
Overall Rating
Quick Delivery
Review by Stewart P.
Happy with this purchase.
Overall Rating
Very Happy
Review by Johny L.
Parts look excellent. Exactly what I wanted.
Overall Rating
good value
Review by drumfed
Easy to use, and the color coded bags saved a lot of time
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