Is it possible to rethread a 5/8-24 muzzle break to 5/8-32?

[lattin1]

I want to get a different muzzle brake for my RRA 458 socom barrel but they use proprietary threading (5/8-32). Can I buy a brake with 5/8-24 threading and use a 5/8-32 thread tap to rethread it? If not, any suggestions?

[Mr blasty]

No you can't. It will just chew it up.

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[lattin1]

So do I have any options other than getting the barrel rethreaded?

[High Tower]

Is there anther brake that will work with the .458? I ask not knowing much about parts available for that round. I'm thinking they threaded it weird so folks can't put a .30 brake on there and kaboom the barrel.

Ideally you would have it rethreaded, but that might mean you will have to pin and weld it.

[Auto-X Fil]

So do I have any options other than getting the barrel rethreaded?

There are some tricks with threaded inserts; but most don't work on fine threads. Your options are:

1) Have the barrel shortened, and a new thread cut.
2) Bore out the muzzle brake to 3/4" and tap a piece of 3/4" 0.120 wall tubing to 5/8-32 inside thread, then weld that into the brake. 7/8"x 0.156" wall would give you a little more meat for tapping it, if the muzzle device is large enough to accept it.

[lattin1]

Guess I'll go with the shortened, rethreaded barrel option. Boring out the muzzle and welding threaded tubing inside would probably work but I don't know if I'm willing to put that kind of time and effort into it. How short can you go on a mid-length gas system?

[Auto-X Fil]

You can go very short with a mid-length, you just might need to drill the gas port a little bigger. What length is it now? Is it already SBR'd?

I thought all the RRA 458 barrels were carbine gas systems. Where/when did you get yours?

[lattin1]

It's 16" now. I have a lower with a tax stamp so sbr'ing it isn't a problem. I bought it online two years ago. Don't remember what site it was from though.

[tigershilone]

1)You can have an adapter made with 5/8-32 threaded female and 5/8-24 male for another muzzle device, it will add about 3/4-1" length overall but is the easiest solution.

Silencerco makes these 22 adapters for an example : http://www.store.silencerco.com/prod...mfire-adapters

2) Another option would be to get your muzzle device with smaller threads (like 1/2-28) and bore it out and thread it 5/8-32, just be aware of caliber diameters and the internal bore size requirements.

[Auto-X Fil]

Hmm, doing a little poking around makes me think you shouldn't go any shorter. I would either have it cut just enough to get new threads, or else go 14.5 or so and weld over the current hole and drill a new carbine position hole.

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