Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Sat Aug 26, 2017 9:27 amby giannid
Si I've been told that it's been difficult to find the right muzzle break for this rifle as it's difficult to time properly with the crush washers provided. Anyone find a muzzle break that goes on this thing that timed easily with the included crush washers? Or has anyone found a break that uses a stop nut to time the break? Seems like that would be the best option.
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Sat Aug 26, 2017 6:04 pmby Bmt85
The standard threads for a 450B is 11/16-24. There are a few options available. Most common around here is ross schuler's brake. Very inexpensive, yet very effective. Tromix is about the same price and has had good reviews, too.
As to a crush washer, rule is don't reuse themafter they've been installed, but I'm not really aware of anyone that offers one for 11/16 threads, so you might want to try it. You could try reaming out one for a 308 (5/8 threads). If you do, I've been told stick to YHM or DPMS, because they will actually crush down, unlike a lot the others. Another option is a shim kit from Badger Ridge. Only bad thing about them is the O.D. is a bit over sized, so depending on the brake you use, they might stick out and look a little funky. I currently run the shims with a Schuler brake, and they stick out a bit. Doesn't really bother me though.
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Sat Aug 26, 2017 7:37 pmby dantheman
Some of us are using plumber's Teflon tape instead of crush washers. Cheap and easy to time. The brake doesn't come off unless you want it to.
Dan
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Sun Aug 27, 2017 10:17 amby plant_one
my brake is timed with black, high temp, rtv
put a small ammount on the threads, put tape on the barrel behind the threaded area (for easy cleanup), thread the brake on and let the RTV cure overnight.
no problems to date.
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Sun Aug 27, 2017 5:16 pmby commander faschisto
Ross brake is excellent, and Wilson Combat has a new one out also for 11/16-24 threads:
http://www.brownells.com/rifle-parts/mu ... 88019.aspx
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Mon Aug 28, 2017 4:49 amby sva01
Bmt85 wrote:As to a crush washer, rule is don't reuse themafter they've been installed, but I'm not really aware of anyone that offers one for 11/16 threads, so you might want to try it.
I ordered some direct from Bushmaster a couple of years ago...
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Mon Aug 28, 2017 8:24 amby commander faschisto
Found these guys for a SS crush washer:
http://atacindustries.com/450-bushmaste ... asher-blk/These guys make 11/16" flat shim packs for the 450b size threads:
http://www.badgerridgeind.com/store/p56/450BMshim
Re: Which muzzle break on a Bushmaster 91702 20 inch?
Posted:
Tue Aug 29, 2017 7:06 pmby giannid
Good information. Thanks!