XM177 Flash Hider & Grenade Ring?

[NYH1]

Looking to get the XM177 Flash Hider & Grenade Ring (https://www.brownells.com/rifle-parts/muzzle-devices/flash-hiders/ar-15-m16-xm177-flash-hider-grenade-ring-prod82717.aspx?avs%7cMake_3=AR-15&psize=96) to make a 11.5" barrel at least 16 inches without going to much over that. Brownells info says with the flash hider and grenade ring it's 4.45" long. That puts the length of a 11.5" barrel with them at 15.95".

My question is, would a crush or peel washer put it over 16"? Or would having a muzzle thread protector machined down to .060"/.075" long work? If I went with a machined down thread protector (or something), I could probably have it machined long enough so I wouldn't need the grenade ring. It'll be pinned and welded.

Or does anyone knows of a 4.5" to 5" long muzzle device? As mentioned, I don't want to go much over 16 inches.

Thanks, NYH1.

[GH41]

Looking to get the XM177 Flash Hider & Grenade Ring (https://www.brownells.com/rifle-parts/muzzle-devices/flash-hiders/ar-15-m16-xm177-flash-hider-grenade-ring-prod82717.aspx?avs%7cMake_3=AR-15&psize=96) to make a 11.5" barrel at least 16 inches without going to much over that. Brownells info says with the flash hider and grenade ring it's 4.45" long. That puts the length of a 11.5" barrel with them at 15.95".

My question is, would a crush or peel washer put it over 16"? Or would having a muzzle thread protector machined down to .060"/.075" long work? If I went with a machined down thread protector (or something), I could probably have it machined long enough so I wouldn't need the grenade ring. It'll be pinned and welded.

Or does anyone knows of a 4.5" to 5" long muzzle device? As mentioned, I don't want to go much over 16 inches.

Thanks, NYH1.

WHY? Why?

[NYH1]

WHY? Why?
I need the barrel length to be 16 inches. I want to use parts that I already have. That's all that needs to be said.

Thanks, NYH1.

[mack7.62]

I don't think you are accounting for the barrel threads, IIRC the XM177 on a 11.5 barrel will have an OAL of about 15.5, which is why to get to 16 you need a 12.5 barrel.

[NYH1]

I don't think you are accounting for the barrel threads, IIRC the XM177 on a 11.5 barrel will have an OAL of about 15.5, which is why to get to 16 you need a 12.5 barrel.
Ok, I didn't know that or wasn't thinking of that I should say. I'll have to look at other muzzle devices.

Thanks, NYH1.

[mack7.62]

There are XM177 type muzzle devices that are made an inch longer but most are not real good copies and look funny to me.

[NYH1]

There are XM177 type muzzle devices that are made an inch longer but most are not real good copies and look funny to me.
I have one of these (https://rouschsports.com/shop/ar15-upper-parts/muzzle-devices-muzzle-brake-flash-hider-concussion-device/xm177-style-flash-hider-slotted/), didn't even know it. It's about 16.5 inches on an 11.5 inch Sionics barrel. Not crazy about it, might not have a choice though.

NYH1.

[ODgreenpizza]

Check out the XM177 Linear Comp from Griffin Armament. It needs a 12.5" barrel to get to 16".

[NYH1]

Check out the XM177 Linear Comp from Griffin Armament. It needs a 12.5" barrel to get to 16".
Thanks. I already have the barrel I'm going to use. So I need a 5 to 5.5" muzzle device.

NYH1.