Originally Posted by
ShaneinWI
Yes, it has the removable brake. I shot w/o it without any improvement. I talked to a guy at Bushmaster about designs who said that wasn't the best idea. Not sure why. The upper receiver has a slide on rail which attaches w/ a single screw. He said actually that is a good system. Bushmaster has improved the design to work the bugs out since Professional Ordinance built them. The design must have had advantages to some as they are still building the rifles.
The allen screw was alittle loose on mine so I drilled and tapped it for a larger screw which made things really tight.
The trigger was a full 10# pull before I had a smith clean it up to a clean 3 1/2#'s. Always thought that was the problem, but no.
I read somewhere that if x-rayed only the bolt and barrel show up as the rest of the rifle is carbon. Which is kind of neat, but not real usefull to us good guys.
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