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


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

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Customer Reviews

Supreme AR15 lower parts kit 5*
Review by Aristotle J.
Verified Buyer
Received in two days after buying. Will be back to shop at Keepshooting again!
Review by Roberta S.
Verified Buyer
Happy with this AR15 lower parts kit.
good value
Review by drumfed
Verified Buyer
color coded bags made thing simple
Review by Ryo T.
Verified Buyer
I purchased two of these lower parts kits. Used one for repair, other is spare.
Good Item
Review by Vern G.
Verified Buyer
Cheapest price anywhere that was in stock. Shipping was quick via Fedex.
Perfect for me
Review by Nakoa F.
Verified Buyer
Satisfied with this purchase.
Perfect Manufacturing A++
Review by Edison C.
Verified Buyer
The parts are awesome. Would absolutely buy again.
Good Manufacturing 5*
Review by Salome T.
Verified Buyer
Would Recommend this AR15 lower parts kit
Exactly as described.
Review by Dixon U.
Verified Buyer
Would Recommend this AR15 lower parts kit
Just as pictured.
Review by Maximillian F.
Verified Buyer
Perfect spare lower parts kit for my AR15.

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