CMMG Complete AR-15 Lower Receiver Parts Kit

Manufactured by CMMG
Manufactured by CMMG
139 Reviews

In Stock

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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

a parts kit


It's a parts kit. It works. It arrived quickly at a great price. Don't really know what else to say

good parts kit


I'v bought several of these in the past they offer a pretty good single stage trigger pull. My only complaint is the trigger and hammer pins fit a little more snug in the receiver. Overall its a great kit.



I've done several builds so I don't necessarily need the color coded parts bags but sure makes it nice. Trigger group isn't too bad either.

As expected, which is great


I've previously used CMMG LPK's and have been happy with the quality. This LPK is no different. PA pricing was very competitive and delivery was fast.

CMMG quality


I've used many CMMG lower kits and the've always worked great. Smoothest trigger pull without costing a lot.



Love the price of this kit for starters. The takedown and pivot pins were nice and snug with a little extension to make it easier to push with a small indent for a punch. All of the parts are nice and smooth. They all fit flawlessly with the exception of the bolt catch. The bolt catch in my lower moves forward and back a little and has too much play where it won't lift up on the magazine follower. I'll try it on another lower to see if it's the actual part or the lower. I may have to put pieces of foil behind it to keep it snug if it's deemed too small.

perfect fit


Never had a problem with these parts kit compared to other cheaper brands. Save the headaches and buy one.

Great Kit


Nice package and great grouping by assembly all color coded to help those who have not assembled a lower before a great way to start and reduces confusion with pins and springs. Mil quality parts and a great price.

High-quality Parts Kit


Nice smooth pull with crisp release. These are some fantastic LPKs for the price. You will not be disappointed in this quality CMMG product.

not great


Not great quality or fit.take down pins fit very loose.