Quick view Patriot Ordnance Factory Patriot Ordnance Factory Roller Cam Pin, Pof 00393 Roller Cam Pin W/gas Ky 223 $60.00 $56.00 This roller cam pin with a modified gas key is for direct impingement-type rifles.Finish: SilverType: Roller Cam PinModel: AR-15Size: 223 Compare Add to Cart