epic fail at the range. had to shoot my ar like it was a bolt action. bought a new forearm so i had to get a new gas block since the forearm wouldn't fit with the a2 sight. guy from rock river arms said " this one will work perfect". get home, put it on, guess what didn't work. i need an extended low pro gas block for the bushmaster carbine barrel. now i need to find one.![]()



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