Cajun Gun Works Barrel Bushing For SP-01/ Shadow 2CGW 10X barrel bushings for the . 550 diameter heavy barrel SP 01s Shadow, SP 01 manual safety and SP 01 Tactical in 9mm and . 40 S&W. Also fits 75B in . 40. Made from 4140 carbon steel and heat treated to RC 57 59, vastly superior to the loose fitting, soft, non heat treated OEM bushing. Only works with the standard 4. 7 barrel, will not work with any extended or threaded barrels. Reduces barrel muzzle play to 0 at lock up. This is a direct