The Blue Barstock Hammer features precision machining and improved design elements with a lifetime guarantee against breakage. This high-quality hammer includes a Commander style spur with fine serrations and narrowed sides to eliminate slide drag.Blue Barstock Hammer with lifetime breakage guaranteeBeautiful chamfer machined around outside and inside holeNarrowed half-cock notch eliminates sear damageCommander style spur finely serrated for positive gripNarrowed sides eliminate drag on slideLowered strut pin hole reduces full-cock spring pressureHammer hooks machined at 020-.022 perfectly square with sharp cornersReady for light final stoning this precision component delivers reliable performance with expert craftsmanship for discerning firearms enthusiasts and gunsmiths.