My favorite lower parts kit - CMMG AR-15 ZEROED Gunbuilder's Lower Parts Kit

I started using these kits when i built my first ar10. I used an 80% lower from 80%Arms, and they recommended this as the best fitting parts kit. Other than the mag catch being a little short, it worked great. Moving forward a year later, these are the only kits i use. Comes with an ambi safety, and ambi mag release. Hard to bead that for the price. Everything fits as it should.