Wilson Combat 414B Bullet Proof Slide Release 45 ACP 1911 Blued Steel HandgunThe Bullet Proof Slide Stop for 45 ACP takes an unbelievable pounding in a 1911 Auto making it vulnerable to breakage and wear. Bullet Proof Slide Stops are fully machined from solid stainless steel bar stock with extra metal left in critical areas for added durability, but the real key to a Bullet Proof Slide Stop is the material. Bullet Proof Slide Stops have a built in detent, serrated top and maximum tolerance shaft. This is a drop in part