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Old January 5, 2020, 10:42 PM   #2
Bartholomew Roberts
Senior Member
Join Date: June 12, 2000
Location: Texas and Oklahoma area
Posts: 8,339
I’ve used the PRI Gasbuster and the older BCM Gunfighter both with a 16” barrel and an Ops Inc. 16 suppressor. I never noticed any difference between either of them.

Most of the gas back pressure is exiting from the ejection port so sealing the charging handle area has minimal effect; but the RTV sealant method is the best option to that extent. The RTV sealant works better than the PRI Gasbuster or BCM; but it isn’t magic. Gas is going to pour out the ejection port with a suppressor and a traditional DI system.
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