Volquartsen Drop-In Hammer Features The Volquartsen Drop-In Hammer is machined from stainless steel and heat treated to Rc 60-61 for long-term durability giving 10/22 owners a genuine performance upgrade that installs without any fitting or gunsmithing. The mirror-polished sear face and precision-ground sear notch work together to lighten and smooth the factory trigger pull by at least 50 percent delivering a noticeably crisper cleaner break than the stock hammer produces. Electro-polishing across the entire hammer creates a velvety smooth low-micron surface finish that increases lubricity which translates to a longer-wearing more consistent trigger feel over the life of the part. This combination of precision geometry and surface finishing is what separates a true performance hammer from a simple stamped replacement. The hammer measures roughly 1.5 inches long and weighs just 0.6 ounces keeping the change in reciprocating mass minimal while still delivering a significant improvement in trigger quality since a lighter hammer means less mass for the trigger mechanism to move on every cycle. It ships complete with a matched hammer spring and trigger return spring so the whole assembly is ready to install as a set rather than requiring the shooter to source additional small parts or fine-tune spring tension separately. Designed to fit the Ruger 10/22 exclusively this hammer is engineered for a precise drop-in fit within the factory receiver without modification drilling or aftermarket pins. For 10/22 owners who want a lighter cleaner trigger pull without the cost and complexity of a full custom trigger job this Volquartsen hammer delivers professional-grade results in a simple part swap backed by the durability of Rc 60-61 heat-treated stainless steel. Volquartsen Drop-In Hammer for Ruger 10/22 Specifications Brand: Volquartsen Fits: Ruger 10/22 Material: Stainless Steel Hardness: Rc 60-61 Length: 1.5 Weight: 0.6 oz Includes: Hammer Spring Trigger Return Spring Available At: GrabAGun