Per request I am modifying the title to: Modified 4595 to 460 Rowland misfires. I have had a 45ACP 4595 for a year. From day one it has had a lot of misfires. I finally tore it apart and found only one firing pin spring installed. Called Hi Point and they said it should has two installed and they shipped me a new set. I installed the new springs and still have the same problem. Pin just does not strike primers hard enough. A friend of mine has a 4595 and I took mine over there today. His fires fine and does have a little more "sound" to the firing pin releasing. Any suggestions? Is this spring bent or streached?