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Posted: 3/23/2014 4:38:13 AM EDT
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I am building a new upper for my DPMS lower, and I bought a Blackhole Weaponry 18" barrel for it and need a new flash hider. The Smith Vortex seems to get pretty good flash suppression reviews, and I think that I want to give one a shot. Smith offers 2 models that might work: 0.635" and 0.735". The thread depth of the new barrel is something under 0.620", but the 0.735" model seems to be available in more places. Should I / could I run the 0.735", so I could be moved to other barrels? Is there any problem running the longer thread depth on the shorter threads?
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| You didn't mention which caliber your upper is chambered. You need to know as there is a different thread pattern for the larger diameter barrels. You can probably tell which pattern thread by looking at your barrel on BHW web site. Once you know the proper thread a crush washer, peel washer or lock nut are used to time the flash hider or muzzle brake for the length of threads. |
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Quoted:
You didn't mention which caliber your upper is chambered. You need to know as there is a different thread pattern for the larger diameter barrels. You can probably tell which pattern thread by looking at your barrel on BHW web site. Once you know the proper thread a crush washer, peel washer or lock nut are used to time the flash hider or muzzle brake for the length of threads. Sorry about that. I guess that I got ahead of myself. This is a 7.62x51 upper, and the thread pitch is the standard 5/8”x 24 for .30 cal. The Smith Vortex models are 1000V (.735") or 1000V-Noveske (.635"), and unlike traditional flash suppressors, there is no need for the crush washer, etc according to their website. |
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