For .223/556 so it’s 1/2-28 threads. I bought this off a guy who said it was mounted but never shot. Looks new to me but no box. I think I have some shims I bought somewhere I will try and find. I purchased this with intentions to pin and weld but went a different route on muzzle device.

$100 FTF or will ship on your dime

Located in Pike Road.

Can text pictures.