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FailZero EXO Nickel Boron M16 / M4 5.56 Bolt Carrier Group Reviews

5 Rating 17 Reviews
Very solid BCG! Love the NiBor finish as fouling just wipes off unless you let it crud up! Weighs 11.5 ounces so its not lightweight by any means. Solid, strong and very nice finish.
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Posted 1 year ago
Great bcg. Own two now. A little tip when cleaning and oiling, watch what oil or solvents you use or you will darken the finish of the NiB.
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Posted 3 years ago
Once again arm and ally comes thru when no one else had them. I love and I love this company they have gone above and beyond for me.
1 Helpful Report
Posted 3 years ago
Top of the line bolt carrier group, it's names speaks for itself. I own several and will continue to buy only these.
1 Helpful Report
Posted 5 years ago
Looks Perfect but I haven’t shot it yet
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Posted 5 years ago
2nd one i have ordered from arm or ally, so far so good, will be running these in all my ARs
1 Helpful Report
Posted 5 years ago
Very good!
1 Helpful Report
Posted 6 years ago
This is my first Ni-Br BCG. I love it--I should have done this long ago. I will be buying more from Arm or Ally.
1 Helpful Report
Posted 6 years ago