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Changed out my stock SR556FB flash hider to an AAC Blackout and it appears the zero on my Troy BUIS and my Burris AR332 moved 3" right and 3" down...with 1-1.5 MOA groups....
I'm thinking the FH changed the muzzle pressure or altered it somewhat....I re zeroed both and they seem repeatable....
Used all the same rounds (xm193) and didn't over torque the FH ......
Any opinions... Would be appreciated...this really surprised me!
I'm thinking the FH changed the muzzle pressure or altered it somewhat....I re zeroed both and they seem repeatable....
Used all the same rounds (xm193) and didn't over torque the FH ......
Any opinions... Would be appreciated...this really surprised me!
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