I don't know if this helps but with the 51 tooth Breakouts and 51 tooth Blackout that I have, if you can see the wrench flats in front of the end of the rail, the suppressor will fit.
I just built an 8 inch 300blk upper with a blackout and a new Troy 7.2" Beta rail and the suppressor fit perfectly!
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"There are 550 million firearms on this planet. That's one firearm for every 12 people. The question is... How do we arm the other 11?" Lord of War.
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