First came a few pistol shots, several witnesses said, then a barrage of rifle fire during the shootout last month at a Waco restaurant favored by bikers. But authorities still have not said how many of the dead and wounded were the result of police fire. Police have identified only one assault weapon, a semi-automatic gun that fires high-powered ammunition, among the firearms confiscated from bikers, and that was found in a locked car after the shooting ended.