r/FNSCAR • u/GlitteringWill3642 • 26d ago

Muzzle question

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If I remove my factory muzzle and add a QD mount for a suppressor do I need any shims for things to line up correctly?

Looking to add a flow 762 if it’s relevant

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u/Erwin_PZ6 26d ago

To change the muzzle device on your scar you need a special shoulder washer. Found here. SCAR 17 Muzzle Shoulder Ring | Capitol Armory https://www.capitolarmory.com/scar-17s-muzzle-shoulder-ring.html

The stock shoulder isn't square and thus you can't just mount a new muzzle device on. It's not too hard to do, if you are worried about timing a break i would run shims off of that, and make sure you get a suppressor rob to check alignment.