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CMMG AR-15 Lower Parts Kit, Complete, Semi-Automatic

CMMG, Inc.
Typically ships the same business day when ordered before 4pm CST.
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CMMG is one of the top companies in the AR-15 game. With the CMMG AR-15 complete lower receiver parts kit, you will get everything you need to finish off your stripped lower receiver. Sets of parts are separated into color-coded bags and come along with directions to make assembly easy even for beginners. Don't settle for a lesser quality parts kit that might fail at any time; the CMMG lower parts kit is ready for the toughest conditions.

Features and Specifications:
AR-15 Complete Lower Parts Kit
Finish: Black

Pistol Grip
Fire Controls And Pins
Standard Trigger

Fits: AR-15 Lower Receivers

Click here for our How-To to on building an AR-15 lower!

Item#: ARR-0121
Total number of Reviews: 13

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5.0 5
"Great LPK. Purchased it for my first lower build. Went together perfectly. The parts seem to be of good quality. The color-coded parts bags are very helpful. I will buy another one of these. Thank you"
5.0 5
"CMMG is one of a few companies that actually manufacture their own products and have found them to be the best on the market. I've used these LPKs in many builds and absolutely recommend it. All the pins, trigger group, springs would be considered a premium kit when sold at other stores. The only I do is let my dog have the grip, I usually buy a Hogue (or other more comfortable grip) to replace this one. It's a good grip but I like a more contour one and I usually purchase a custom furniture set. And my dogs approve!"
5.0 5
"Very easy to install for a first time builder. No special tools are required and it was much easier to install than anticipated on an Anderson lower. Highly recommended. Also, great value for what you get."
5.0 5
"This is for my first build. I installed this in an FMK Patriot lower, very well made, everything fit nicely!"
5.0 5
"Of all the lpks I've used or built this is by far the best quality and bang for your buck. Being a civilian it's nice to see companies offering mil spec products that a normal consumer/person can use and assemble. Directions and color coated bags help for the beginner as well. Would highly recommend this lpk to anyone looking to replace or build their gun."
5.0 5
"Bought this lower parts kit for my first budget build, and am very happy with it! Everything fit perfect! Safety selector is a tad bit stiffer than what I'm used to but works really good. Highly recommend this product for anyone looking for a good parts kit at a good price!"
4.0 5
"I was initially very pleased with this kit. The colored envelopes, together with a card showing the contents of each, were a great way to organize the parts. The parts seemed to be of high quality, and assembly was easy. But then I found the kit was missing one of the detents for the takedown pins! Now, I'm very disappointed to not finish the build for the time being. Sent a message to the e-mail address on the card..."
5.0 5
"Bought this for a Bushmaster lower. Fit and function was perfect. I will be buying two more. One for a second lower and one to replace the trigger in my Stag."
5.0 5
"An update on my earlier 4-bullet review: CMMG sent a replacement for the missing detent the next business day. I later finished the build, and I'm very happy with it. Assembled the trigger with a little molybdenum disulfide paste, and the trigger is great! Overall, this is an excellent LPK for the money."
4.0 5
"This was my second purchase of this kit. First one went on a blank lower no problems, so was easy decision to buy another. Color coded bags and explanation sheet allows for easy to follow when you watch vids on web to build."
5.0 5
"Quality parts and the color coded baggies helped so much to be able to identify the individual pins and springs and detents. Trigger is smooth and the grip feels good. Everything went in perfectly."
3.0 5
"Everything was going great while putting this kit into my lower until I ran into the selector switch. I must have gotten an oddball because it seems to be bent and has a hard time going from Safe to Fire. May replace it with an aftermarket selector."
5.0 5
"This is a decent deal, all of the parts fit fine in my Anderson lower. I did 2 tours in Iraq, USMC. So we were constantly cleaning our weapons and using tiny amounts of CLP. Anyway, im just letting you know, i have experience with small arms and weapons. And to tell you the truth, me and my son are building an AR15 on a polymer lower. Probaly use this same kit for that build as well."