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ThunderBeast Ultra 5" and 6.5 Grendel Preliminary Test Results
#14
LRRPF52 Wrote:I wouldn't use the 6.5mm can on an AR15, because it works too well, which means more supersonic noise from the vent holes in the BCG and close to the shooter.

Would your opinion change if the Grendel was a gas piston instead of DI?
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ThunderBeast Ultra 5" and 6.5 Grendel Preliminary Test Results - by Capt. Morgan - 10-23-2016, 03:04 AM

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