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Can’t see the bottom of the bolt carrier, is this cut out like commercial bcg or is it m16 full auto cut? — 2 Answers

by Brent Moore, from NC, United States Asked on February 5, 2021

Name Phase 5 Tactical AR-15 Black Complete Bolt Carrier Group (BCG) (5)
$202.50 $150.00 Save 26%
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A
Answered by Tom B, Gear Expert, from IL, United States, on October 27, 2021

This is a standard AR-15 cut bolt.

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A
Answered by B-Rye the gun guy, guest, from MN, United States, on March 02, 2022

We sell have AR-15 (semi auto), and M16/M4 (full auto) bolt carrier groups, but the NIBX BCGs are semi auto. You can use either an AR-15 or M16 carrier if your weapon is not a machine gun.
email response from alpha:
Both the AR-15 and M16/M4 BCG use the same bolts which are capable of full auto, but the M16 carrier has extra material on the bottom rear to activate the auto sear in a full auto weapon, while the AR-15 carrier has this material removed. That is the only difference between the two

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Last updated 2025-11-12 UTC.