CMMG Complete AR-15 Lower Receiver Parts Kit

Manufactured by CMMG
Manufactured by CMMG
139 Reviews

In Stock

Orders of non-FFL items will ship same-day if placed before 3:30pm CST. FFL orders will ship within 7 business days if transfer details are provided

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CMMG Lower Parts Kit for AR-15. Includes pistol grip, fire controls, springs, and pins necessary to complete stripped lower. All AR15 Lower Parts Kits now come in color coded pouches to aid in assembly.
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Weight7 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

quality kit


not much to say about the product except its good quality. I've used the cmmg lower parts kit before which is why i bought it again. easy to install and clear instructions via youtube video. the shipping was fast and undamaged.

Great Trigger Feel


Off all the AR-15's I have handled while window shopping, I have found this trigger to have the cleanest break and smoothest operation.My buddies BCM which probably cost quite a bit more feels very notchy. For the price of this kit, the color coded bags, and the quality of the parts it can't be beat. I'm not really sure what the big attraction is to the $100 LPK's is when the same thing can be had using this!

Practically installed itself!


Okay, not really but all quality parts, fit and finish is great. Primary Arms shipped so fast, I got it the day after I ordered it. This is a great company, I have since made several other orders with them. Thanks Primary Arms!



One of the best lower parts kits I have used. Very smooth trigger for a standard kit. Well worth the money!

Oh my god crazy fast shipping.....


Ordered on Saturday night at 1130pm and it showed up Monday morning in the mail. I am sure the product will be great as it is a cmmg kit.

Exactly as described


Ordered this standard LPK for a budget build, it shipped quickly and came with all the parts described. Assembled the LPK and it fit in my lower perfectly (as it should). I would recommend this LPK to anyone looking for a mil-spec lower parts kit at a fair price. Shipping was fast, I'll order from PA again.

CMMG Lower Receiver Parts Kit LPK for AR-15


Outstanding quality and trigger is great. will buy another on my next build.

Lower receiver parts kit


Parts delivered in timely manner. Everything fit as expected and will do it again in the near future!!

CMMG Lower Parts Kit


Primary Arms has great prices, selection, and fast shipping. The CMMG parts kit is a great value. High quality. The only parts kits I use when building an AR15.



Receive my order in a timely manner. The best price I found on the internet. Thanks Primary Arms.