The Accuracy Systems Extended Firing Pin fits the Mini 30 and Mini 14 and eliminates the misfires! Better Quality Than the Ruger Factory OEM Firing Pins, the XL pins are precision machined using CNC Swiss turning centers. The firing pins are made from domestic 17-4 Stainless Steel then heat treated to an H900 condition. Firing pins are made from SS to help eliminate internal corrosion issues and improve reliability. The heat treated condition helps maximize the life of the firing pin by increases in strength and toughness. Note: Gunsmith may be required for proper fitting.