450Bushmaster.net

I want to suppress my 450BM. Just looking to make it hearing safe. I know the suppressor is going to be big. I have an approved form one, a 12" Ti tube. and plan on doing the D cell freeze plug thing (I've built 30 cal and 22 suppressors this way already).

When I'm not running suppressed I want to add a break and tame my rifle just a bit... got a wife and a little girl who may shoot it... So I got the manufacturer (SD Tactical Arms) of the tube and suppressor mount to make a muzzle break in 11/16x24 (the factory thread for 450BM's by Bushmaster). http://sdtacticalarms.com/SDTA-Muzzle-Break_p_65.html



Problem is I can't find any shims to time the break properly (its a bad idea to use crush washers on muzzle devices that mount suppressors... they can cant just a slight bit and cause baffle strikes...especially on a can long enough to tame the 450BM... ie 12").


Was thinking I'd prefer a simple jamb nut, but I cant find one thin enough... Can any one help?

i think the right way would be to use a peel washer. i recall seeing a post about it somewhere on here in a discussion on timing a ROSS break.


what i wouldnt be able to even being to help with would be a peel washer of the proper size we need for the thread size on this caliber.

maybe someone here as a good source for one


google came up with this , but it doesnt say if the PN listed there is for a crush or a peel washer.
viewtopic.php?f=2&t=4995


since SD was willing to hook you up with a brake, maybe they can help you source a peel washer too, or at least give you a viable option for clocking that brake correctly.

I would give Ross a shout and ask them how they clock their breaks. I know they make them in our thread.

-Barttman

I do not believe that shim kit fits the 11/16-24 standard 450 Bushmaster thread.

-B

Give them a call. They sent me a shim kit for a 11/16 x24 muzzle break. They might sell the kit separately.

The shim kit comes with the rapid brake only at this time. They don't sell it separately at this time. It is worth consideration if you want a brake that you can use with a can later. Wilson brake with a vers 458 can from Bowers.

Still looking for shims, or a very thin 11/16x24 nut to use as a jamb nut... I'm building my own from 1 can with the SD tactical tube. So I already have an SD brake.

since SD tactical made the brake for you.. have you tried contacting them about some shims? they may have an option for you - or be able to make one... just thinking out loud

Instead of adding shims you can trim off the rear of the brake. Hone or stone off a few thousands of an inch at a time until at he torque and position of the brake you want is achieved.