Powder River Precision Striker Retainer Firing Pin Set of 3. You can put one in your pistol one in your range bag and have an extra just in case. They are 3mm x 16 mm and are a spring roll pin not a split role pin. The layered design makes them stronger than the stock split pin and also less likely to work loose. If you do a lot of dry fire practice then these pins are a must. Specifications for Powder River Precision Striker Retainer Firing Pin: Manufacturer: Powder River Precision Size: 3x16 mm Gun Model: Springfield Armory XD Mod2 Springfield Armory XD Springfield Armory XD-M Quantity: 3 Features of Powder River Precision Striker Retainer Firing Pin All XD XD Mod.2 XDM & XDM ELITE Package Contents: Powder River Precision Striker Retainer Firing Pin What firearm models does the manufacturer say Powder River Precision Striker Retainer Firing Pin is compatible with? The manufacturer suggests that Powder River Precision Striker Retainer Firing Pin is compatible with Springfield Armory XD Springfield Armory XD-M Springfield Armory XD Mod2Powder River Precision PRP-037: Striker Retainer Firing Pin Set of