Reviews & Ratings for CBC Industries AR-15 Complete Upper Receiver Pistol Kit, 300AAC, 7.5in — 2 reviews — Page 1

Good after you fix the parts that mess up. Had issues with the rail coming off as usual but didnt expect bcg failures. Replaced the firing pin and the cam pin as the pin got damaged due to an out of tolerance cam pin.

I had the necked down portion of a 300 blackout shell get wedged in the chamber so hard I cannot get it out. The barrel nut seemed tight, the fore end was loose on the barrel nut which led to me inspecting the barrel nut after first shooting it. 60 rounds after inspecting the barrel nut is when the crippling malfunction happened. The compensator also had rough edges and did not seem to tame the recoil much at all. I replaced the barrel with an arrow precision, and the compesator with a linear compensator from kaw valley and I no longer seen any muzzle flash from full power 300 blackout loads in low light conditions. The lower parts kit worked fine, bolt carrier group seems fine, the gas block had a screw installed that stripped out upon removal and I accidentally drilled into the barrel when trying to remove it which makes me wondering if they tempered it correctly, I'm gonna guess that they did not. In short, if you want a "cheap" complete 300 blackout upper parts kit, save a little more money and but aero precision, I think it was $80 more than this kit but it may have been minus the bolt carrier group, but from my experience I would not buy this kit or anything from cbc ever again. The poor quality of this kit seemed almost dangerous, at the least it was disappointing. It was so bad I did not try to contact the company with any issues I had because I personally do not believe that they are capable of producing a quality barrel.