Iver Johnson Arms THRASHER : Thrasher is matte blue in finish with Walnut large diamond grips. Features are black bull barrel; frame and slide are 4140 CNC machined steel; 2 stage recoil spring system; Military style trigger; beavertail grip safety with memory; Military style fixed front and rear sights; thin line, angled serrations in the rear only; round, combat style hammer; Military style thumb safety; ejection port lowered and flared and slightly beveled magwell.