CMC Triggers AR-15 Lower Parts Kit - No Fire Control Group or Grip

Decent kit for the sale price, roll pins are extremely soft and deform way too easily. Luckily i have tons of spares but something to note. Springs and other parts seem fine.

Put this in an aero m4E1 lower I built as a back up. Everything fit fine, did a few range trips and no issues. Didn’t love the safety although it did work and I ended up replacing it with a Geissele ambi. But overall I think this kit is ok.

The aluminum trigger guard appears to be a blatant copy of Magpul’s design, but it’s not as high quality as the real thing. The springs and detents are made of quality materials and I would say are a little above average. The magazine catch is not great: it appears that the threads on the shaft are very rough and this is not the normal 2-peice design where the shaft is pressed in, but rather it’s a solid casting. The takedown pins and mag button are average quality. The selector is pretty clean: no visible casting artifacts and the surfaces that slide in the receiver hole are lightly polished which is a nice touch. The bolt catch is pretty average but I will note that it has some sharp corners on the main paddle and the overall finish has some minor spot defects. Most people probably wouldn’t notice these details but perhaps this will help the few more discerning customers. Overall i would say it’s a good deal if you want the trigger guard. But, I am not sure I would use the mag catch.

Everything works as it should but the aluminum trigger guard didn’t line up with my poverty pony stripped milspec lower of all things. Couldn’t install it period as the front Allen screw holes didn’t line up not even enough to start the screw. Luckily I had a spare one I used instead but still unacceptable in my opinion. Even for a budget parts kit like this one.

Excellent product for the money. All parts fit perfectly. Trigger guard is very nice quality and it is aluminum. I also want to thank Primary Arms for a excellent service each and every time. Thank you

Good fit and finish for all of the parts. I just wish we could do away with the standard trigger guard.

A nice quality kit. I love the trigger guard upgrade, unlike some previous reviewers. Its very similar to a Magpul trigger guard which I was going to upgrade to anyway like many many other Americans have. I caught this on sale which made the deal even sweeter. Thanks once again Primary Arms.

We are happy to have provided you with a great product at a great price.

Decent kit, needs to include a handle grip screw..

So I was laying in bed with Covid pneumonia, while I got an email on the deal PA had for these cmc parts kit. I’ve just purchased the cmc flatty so I grabbed it I should have grabbed 4 but live and learn. The finish on the parts were perfect seemed like nitrated. The take down pins slide right in, springs straight, and most off all mag catch and roll pin went together so easily! From now on on general builds this parts kit my go to!

All parts look well made and fit well. If I catch these on sale again, I'll get a couple just for spares. Good stuff. I've never seen a LPK packed in a neat little cardboard box like this one.