FailZero M16 / AR-15 EXO Coated Bolt Carrier Group
NOTE: BCG may ship with either a dark FailZero logo or a subdued lasered FailZero logo.
- M16 cut carrier
- Magnetic particle inspected
- Live fire tested
- Bolt, extractor, bolt carrier, cam pin, carrier key, and firing pin
Ratings & Reviews
by Debi Beasley
2 rounds it jammed in chamber had to beat it out.. tried a old ar15 bcg work fine
Failed one 2 many
by Airborne RN
3rd, 12th, 121st, 122nd, & 123rd round resulted in FTE using a brand new FZ EXO nickel boron coated BCG placed in a SPIKES Lower Receiver containing a BRO DIT.AE 55gr 223 REM used in a Magpul Gen2 magazine.FZ failed one 2 many.Eventually used a PSA bcg to enjoy the rest of day.
Great Product and Service
Another great product from PA at a great price, As always, the shipping crew comes through on their end and my products were at my doorstep in 2 days. On another note, Nick and his crew over at customer took care of me, as well.
Fail zero EXO(Nickel Boron coated ) M16 bolt Carri
by james browning
As always, good deal's good service and, top of the line products.
Built well, and functioned perfectly dropped in for 200 rounds so far. Expected the coating to be a bit slicker to the touch, and to completely wipe clean. It doesn't though, and you still need to do a tiny bit of scraping on the back of the bolt. Everything else wiped right off. If your looking for a bcg this is a good buy. If you already have a functioning bcg, I would only buy it if I had spare cash I was looking to spend.
by jonathan anderson
Can't say a whole lot just built the gun. Seems to be a very well built bolt assembly. Even the gun shop that looked at it said it was a quality piece.
FailZero EXO (Nickel Boron Coated) M16 M4 Bolt Car
by Sean M
Excellent BCG, very smooth and matches up perfect with my Ballistic Advantage 18" barrel. Best price I have seen! Shipping was typical "Fast PA!"
FailZero Nickel Boron Bolt M16
Excellent bolt. No cycling issues at all wipes clean inside and out. Great Product And Great Service as always from Primary Arms. Thanks Again,Primary Arms
EXCELLENT! FailZero EXO (Nickel Boron Coated)
by Wilfredo Arillo
Excellent product and great quality. I tested as soon as i received it, runs flawlessly. It looks to be lubed all the time without adding lube :)
Easy clean and smooth as silk
Excellent product, Fall Zero and WMD both are GTG. Can't beat the price on this.