5/8x24 Muzzle device

BUFF7MM · Sep 26, 2016

Muzzle brake, flash suppressor, compensator, I need suggestions for a reasonably priced, non bank breaking, 5/8x24 thread device. This will be for an AR-15 barrel, 13-1700 ft/lbs energy, 25-2900 FPS velocity. Oh and did I mention I'm a cheap bastard. :innocent0

danb · Sep 26, 2016

This does not sound like 223 or 5.56x45. This sounds like .30cal, maybe 300 AAC?.

BUFF7MM · Sep 26, 2016

danb said:
This does not sound like 223 or 5.56x45. This sounds like .30cal, maybe 300 AAC?.

No to all the above. I won't disclose just yet, but there's 1 member here who knows what it is and he's not a Hooligan, matter of fact I've never met him.

danb · Sep 26, 2016

Buff7mm said:
No to all the above. I won't disclose just yet, but there's 1 member here who knows what it is and he's not a Hooligan, matter of fact I've never met him.

Hard to answer the question without knowing caliber.

Almost all the 5/8x24 muzzle devices I've come across are for .30 cal, although a few will allow 338 Lapua. The hole in a muzzle device designed for 308 win or 30 cal is about .330 in. The hole for one designed for 338 Lapua naturally has to be bigger, probably .360 in.

If <=308 or 7.62, then there are about 3 dozen on primary arms.com that are likely to work, many under $40. There are a few that are designed for 338.

BUFF7MM · Sep 26, 2016

danb said:
Hard to answer the question without knowing caliber.

Almost all the 5/8x24 muzzle devices I've come across are for .30 cal, although a few will allow 338 Lapua. The hole in a muzzle device designed for 308 win or 30 cal is about .330 in. The hole for one designed for 338 Lapua naturally has to be bigger, probably .360 in.

If <=308 or 7.62, then there are about 3 dozen on primary arms.com that are likely to work, many under $40. There are a few that are designed for 338.

It's less than 30 caliber but bigger than 22 caliber.

outrider58 · Sep 26, 2016

I think I'm smelling Creedmoor... :innocent0

danb · Sep 26, 2016

Buff7mm said:
It's less than 30 caliber but bigger than 22 caliber.

any .30 cal muzzle device ought to have enough clearance (.330 hole). I will guess 6.8 SPC based on ballistics and thread.

In any event, some reviews I found which I posted in another thread:

http://www.thetruthaboutguns.com/2016/02/jeremy-s/308-muzzle-brake-test/

http://precisionrifleblog.com/2015/08/12/muzzle-brake-blast-ground-signature/

http://precisionrifleblog.com/2015/08/21/muzzle-brake-summary-of-field-test-results/

outrider58 said:
I think I'm smelling Creedmoor...

Also a good guess.

BUFF7MM · Sep 26, 2016

danb said:
I will guess 6.8 SPC based on ballistics and thread.

Nope

outrider58 said:
I think I'm smelling Creedmoor...

I should have said AR15 platform, and no it's not it's little Grendel brother either.
No more hints, it will be revealed at a later date.

5.56blaster · Sep 26, 2016

I was on ebay last night looking for the same thing. Lots of stuff there.

BUFF7MM · Sep 26, 2016

5.56blaster said:
I was on ebay last night looking for the same thing. Lots of stuff there.

Yeah, I've been scouring eBay but couldn't make up my mind. Outrider58 is going to hook me up with one soon, I'm excited to get this party started. :party29:

steves1911 · Sep 26, 2016

277 wolverine? Or maybe 25/45 sharps

lazarus · Sep 26, 2016

outrider58 said:
I think I'm smelling Creedmoor...

.25-45 sharps would be my guess. I thought 6.5 creedmore called for an AR-10?

For muzzle device, narrow it down. What the hell kind? Flash supressor, linear comp, muzzle brake? If just "pick any" I'd go with a KAW valley linear comp for a .30, that'll work fine on a smaller caliber as well. It is what I am looking to put on my .223 AR-15 down the road. Don't need a brake at under 2500lb-ft. A comp for muzzle climb isn't a terrible thing, but I am not 3-gunning it. I DO hunt and I can't always have ear pro on every time with hunting, so reducing the dB at my ears is always a good thing. Also wish my setup I have a 20" barrels so I don't really need a flash supressor.

Bootknife · Sep 27, 2016

25-45 Sharps ? Brownells had 51t AAC 's on sale for $72 .

j_h_smith · Sep 27, 2016

Ebay has listings that start at $14.99 with free shipping. Most are advertised as 308. At first I thought you were building a 300 win mag AR, but the ballistics are way off. Whatever it is, good luck!

byf43 · Sep 27, 2016

Buff7mm said:
Muzzle brake, flash suppressor, compensator, I need suggestions for a reasonably priced, non bank breaking, 5/8x24 thread device. This will be for an AR-15 barrel, 15-1700 ft/lbs energy, 25-2900 FPS velocity. Oh and did I mention I'm a cheap bastard.

What a co-ink-e-dink!!!!!!!!

A good friend of mine has a Ruger Scout in .308 and he is taking off the "flash hider" and when he called Ruger, they said that the threads were 5/8x24.

He's looking for just a thread protector, for his Ruger.

:shrug:

Pinecone · Sep 27, 2016

If smaller than .30 cal, any .30 cal device will work.

TheGunnyRet · Sep 27, 2016

ATTAG did a 308 Muzzle Device test a while back and it cam in the top three I believe...prices may vary...

https://www.youtube.com/watch?v=0qDf6Xf0rR4

http://www.thetruthaboutguns.com/2016/02/jeremy-s/308-muzzle-brake-test/

j_h_smith · Sep 30, 2016

My guess is.......... 6.8 Remington SPC. Am I right?

j_h_smith · Sep 30, 2016

I'm telling ya its the 6.8 Remington SPC. Gotta be. It's the only cartridge with those ballistics that runs at the AOL of the AR mag. That's why the bullet is set so deep into the brass. 6.8 is equal to a 27 caliber too. The 6.8 barrels also have a 5/8" x 24 thread for a suppressor or brake.

It's the round the military wanted to replace the 5.56 round with. It's a nice compromise between the 5.56 and the 7.62 x 51.

What do I win?

danb · Sep 30, 2016

j_h_smith said:
I'm telling ya its the 6.8 Remington SPC. Gotta be. It's the only cartridge with those ballistics that runs at the AOL of the AR mag. That's why the bullet is set so deep into the brass. 6.8 is equal to a 27 caliber too. The 6.8 barrels also have a 5/8" x 24 thread for a suppressor or brake.

It's the round the military wanted to replace the 5.56 round with. It's a nice compromise between the 5.56 and the 7.62 x 51.

What do I win?

I already guessed 6.8 SPC and the answer was nope.

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