450Bushmaster.net

by **MudBug** » Fri Jun 12, 2009 1:24 am

anyone know the thread pattern on the 16" barrels? I've looked all over Bushmasters site with no luck.

by **BD1** » Fri Jun 12, 2009 7:01 am

It's a real odd ball, 5/8" x 28 pt if I remember correctly. I had ordered, I think a 5/8" x 24pt threaded break to meet NYS's ridiculous "Assault Weapons" ban, and found that it wouldn't fit. In the end I had a local gunsmith order and install a custom gentry quiet brake. Da-Mar gunsmiths in Weedsport NY did the work and it's a real nice job. They deal with Gentry quite a bit and are working on a Gentry 12 guage quiet brake which looks pretty interesting. The custom brake on my .450B was a little over $100 installed.
BD

by **wildcatter** » Sat Jun 13, 2009 8:52 pm

MudBug wrote:anyone know the thread pattern on the 16" barrels? I've looked all over Bushmasters site with no luck.

From memory I believe it's a 11/16 NF

by **BD1** » Sun Jun 14, 2009 7:11 pm

Wildcatter might be right. I remember checking it quickly and thinking it was the standard 5/8 x 24, and being wrong. It may have been the OD I had wrong, rather than the pitch. It may have been 11/16 x 24. The gunsmith may remember. I'll give him a call tomorrow.
BD

by **BD1** » Tue Jun 16, 2009 1:38 pm

I talked with the gunsmith last night. It is 11/16"
BD

by **talonxracer** » Tue Jun 30, 2009 8:41 pm

Yes the muzzle is threaded to 11/16"-24

I drilled and tapped a JP tactical compensator for my 450B

by **MudBug** » Tue Jun 30, 2009 9:03 pm

Lehigh Bullets is working on a combo flash hider/muzzle brake for the 458 socom that I think might have promise.

by **Al in Mi** » Wed Jul 01, 2009 2:02 am

talonxracer wrote:Yes the muzzle is threaded to 11/16"-24

I drilled and tapped a JP tactical compensator for my 450B
[ http://i54.photobucket.com/albums/g96/talonxracer/IMG_0905.jpg ]
[ http://i54.photobucket.com/albums/g96/talonxracer/IMG_0896.jpg ]

Can you tell a difference with that comp/brake?

I have the larger version on my DPMS 300 shorty mag, it really tamed that one down.

by **talonxracer** » Wed Jul 01, 2009 6:33 pm

Yep, the Tactical comp taed it right down, but she really BOOM's now! LOL

by **2zero6** » Sat Aug 08, 2009 12:18 am

talonxracer wrote:Yep, the Tactical comp taed it right down, but she really BOOM's now! LOL

This will help with that boom. If you can afford the $2100 plus tax stamp
http://www.qsmsilencers.com/450%20bushm ... stats.html

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