“This is the first nickel boron bcg that I have bought but I did my research first and dicided to go with fail zero.after opening the package I could see right away the quality difference.i have many more builds to build and I think I'll stand behind fail zero. Thank You.”
“Purchased a Fail Zero EXO BCG and i love it, placed it in my Hardened Arms Suppressed 5.56. Works flawlessly so far. only put 90 round through it but that's only because of the blow back from the suppressor. But no complaints as of yet, love the ease of clean up on the BCG. Highly recommend This Bolt.”
