A friend of mine has a post-ban Romanian-made AK-47 SAR1, and he's decided that he wants to put on a muzzlebrake. I looked over the legalities of "assault weapons", and it appears that muzzlebrakes are kosher, but we still have a bit of a problem. Obviously the AK-47 type muzzlebrake is not a flash supressor, but he wants an AK-74 type. Is it considered a flash supressor? If it is, does anyone know of a muzzlebrake that will deliver good performance without a call from the ATF?