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.
Last edited by Max Power!; 11-25-2012 at 10:15 AM..