also I want to get this muzzle break (the first listed for a yugo)
but is it that easy to remove the grenade launcher?
Buy the best scope mount first. The receiver mounts are about useless. Try a side mount like the Choate mount. It's like an AK side mount, you can still use your open sights very easily. and your scope stays put. There all I use for mounts and I use a Burris compact 6X scope.