This Bear Creek Arsenal BCG features a full mass M16 profile bolt carrier machined from 8620 steel and finished with Salt Bath Nitriding. The gas key is properly staked and the carrier does have forward assist serrations. The 5.56 NATO bolt assembly is made of 9310 steel and features a manganese phosphate finish. Every BCG goes through magnetic particle inspection (MPI).
BCA M16 Profile 5.56 NATO Complete Bolt Carrier Group – Black Nitride
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BCA Bolt carrier group...
I have my BCG installed in an Aero upper and lower. It is shooting very well from my 223 wylde averaging 1/2 in MOA at 100yds. Can't say enough good things about the guys at AR15 discounts, great prices, cheap shipping and great service. Will be purchasing a lot more products from them in future AR builds. A+++
So far so good!
Have run a little over a hundred rounds through new build with this bolt carrier in it and so far have had no problems with the Bolt Carrier Group. Can't say enough good about AR15DISCOUNTS.COM, I've made several purchases from them and its been same day shipping, packaged well and good quality parts.
This BCG will be used on a new 7.62X39 rifle
Just swap out the firing pin and install a new extractor spring. Already fired it a bunch in a different lower and love the 7.62X39 round in many rifles. I prefer them to 223/556 especially on a short range rifle with 16" barrel. BCA products are high quality for low dollars ! Many people spend way to much money for parts they don't even need or capable of using. Lots of unnecessary junk out there these days. KISS !
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