Originally Posted by jarrodp
The original M59/66 has a grenade launcher on it. Those are not legal in California, so they replaced the grenade launcher with a muzzle break. According to ATF rules, modification of the rifle in this way removes the curio and relic status. In that case, it must be transferred through a FFL and be DROSed.
However, some of those Yugos had a sleeve welded over the grenade launcher and did not replace it with a muzzle brake. I have no idea what that
did to C&R status.