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Best BCG for 5.56 Suppressor Use

Gemtech and Bootleg are the only adjustable bolt carriers that i know of. The Gemtech need to be removed from the upper to switch between suppresses and unsuppressed, while the Bootleg can swap while in the upper. They are pricey!

the second is "gas buster" charging handles that are made by several companies......or you can drill out or seal a standard charging handle yourself.

even with all of those, like eating a can of baked beans........................there will be gas!
 
I bought one of the gemtech about 5 years ago to use on a 300 bo only to find out it didn't need it. Then I used it on a 556 mid length and discovered it wouldn't function reliably in suppressed mode with a suppressor. Not enough gas, same as the black out. It will work as advertised on a carbine gas system which tend to be over gassed.
 
Stay away from adjustable BCG's, and just get a solid, reliable milspec or milspec+ BCG.

Microbest manganese phosphate with hard-chromed internals, or completely hard-chromed. These are also sold under the names SOLGW, BCM, Centurion Arms, and more.

AO Precision manganese phosphate with hard-chromed internals.

Sionics NP3-plated.

Forward Controls Design (made by Sionics).
 
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