Lead and Steel Mil-Spec Lower Spring Kit Features The Lead and Steel Mil-Spec Lower Spring Kit replaces every spring in a standard AR-15 lower receiver in one affordable package. Made from stainless steel the springs resist corrosion and fatigue better than lower-grade alternatives holding their tension through repeated cycling. Because the kit is built to mil-spec dimensions each spring drops directly into a standard lower parts kit without modification or hand-fitting. This makes the kit a convenient option for builders assembling a new lower or armorers refreshing a worn trigger group. At just 2 oz total weight the 9-piece kit is easy to keep on hand as a spare parts set for routine maintenance or troubleshooting a malfunctioning lower. Having every spring available as a matched set means a shooter isn t left searching for a single hard to find component when one spring finally wears out. The kit suits range-goers competitive shooters and armorers alike who want a dependable fallback for keeping a rifle s trigger group running smoothly. For the price it is a straightforward way to extend the service life of any mil-spec AR-15 lower. Lead and Steel Mil-Spec Lower Spring Kit Specifications Manufacturer: Lead and Steel Model: Mil-Spec Lower Spring Kit Color: Black Material: Stainless Steel Firearm Type: Rifle Pieces: 9 Weight: 2 oz Available At: GrabAGun