Toolcraft 5.56 NATO Complete M16 Bolt Carrier Group - Nitride
- 5.56 NATO with M16 cut profile
- Full auto rated
- Salt bath Nitride finish
- True Mil-Spec dimensions
- Carpenter 158 tool steel shot peened bolt
- Aircraft quality 8620 steel carrier
- 4130 steel gas key with grade 8 staked screws
- 4140 steel extractor and cam pin
- Hard chrome ground 8740 steel firing pin
- Magnetic particle inspected
The mission at Toolcraft Inc. is to build the finest AR-15 and AR-10 bolt carrier groups on the market. They accomplish this goal with the use of high tech machinery, top of the line processes, and rigorous quality control. Their team of dedicated employees are trained to look for any imperfection along the assembly line to make sure no bad products ship out their door.
Ratings & Reviews
by Coach Barry
I have used these BCGs in my last 3 AR builds and find them to be of the highest quality. I am happy to see Primary Arms add this brand to their already outstanding line of parts. Now I know where to order bolts for all future builds.
More than what you pay for.
by Wayne B.
I've been incredibly impressed with this BCG. Its out performed some of the bolts I've spent double the price on. I've got about a thousand rounds through it so far with no malfunctions. Sometimes you get what you pay for. Sometimes you get a lot more. Super happy with my purchase.
Simply the best
I tried several brands in a dozen AR pattern builds. I've settled on Toolcraft.
<br>Toolcraft makes the best BCG for the money - period. Full milspec where you need it, exceeds milspec where it counts (bolt). Nitride treatment tops it off. Yes, you can spend more money on a BCG if you want certain cosmetics. But I'd rather save that money for a better barrel.
by Troy -
Fantastic BCG. My only other AR is my Colt duty rifle. Choosing a BCG for my new rifle was daunting. Toolcraft has an EXCELLENT reputation and physically comparing it to my Colt BCG it is identical. Functions perfectly just like my Colt
by ROBERT -
Not sure if it was an accident, but mine came with a bolt stamped as C158. Not complaining one bit.
Excellent bolt carrier group. Considerably lighter than the factory BCG that came with my rifle and there is much less recoil now. Good value for the money; would definitely buy again.