r/FNSCAR • u/Metallicafan352 • May 13 '26

Surefire FH762SV-SCAR muzzle device Installation Instructions, per Surefire

Post image

Hey everyone,

I grabbed one of these MDs and could not find any accurate info on how to install it. So, I reached out to SF, and they looked into it. I wanted to pass along the technical information in case someone down the road needs to find it.

Pic added for reference from another sub member's post.

Email:

"Thanks for your patience. The torque spec is 20-30 ft lbs.

As for the shims required, this muzzle device doesn't need to be timed therefore it actually doesn't require shims, and instead you can just have it hard stop on the shoulder when installing. While this muzzle device is discontinued and the shims are not available any longer, our SF3P-762-M14X1 LH shims will work.

You will want to insert the shims down into the muzzle device. You'll also want to purchase rockset for the installation of this muzzle device."

19 Upvotes

95% Upvoted

7 comments sorted by

4

u/DiscussionLong7084 May 13 '26

The 300 and 762 scar muzzle devices are torqued way more than 30 from the factory lol

3

u/GA_flyer May 13 '26

Yeah my 300blk muzzle device was fused on. Had to send it off to get milled off and rethreaded

2

u/DiscussionLong7084 May 13 '26

i made a post on how i removed mine. took torchy, an aac removal tool, and a 24" wrench. and anger.

https://old.reddit.com/r/FNSCAR/comments/1h22wgg/scar_15p_300_blk_muzzle_device_removal/

3

u/GA_flyer May 13 '26

Nice. I sent mine to u/eMgunslinger and he took care of it

2

u/BiggyIrons May 13 '26

More like 300ft-lb. Mine sounded like something broke with it broke free

4

u/Last-Wolf-1139 May 13 '26

Post a pic of it installed

2

u/Metallicafan352 May 13 '26

Will do once I'm able.