I have been reading through the posts over the past week and have really enjoyed all the useful information, thank you. I just joined the forum and this seems like the best place to ask my question. I have an Arsenal SLR107 and without going into a long story, I am missing one part, the spring loaded firing pin. K-Var is out of stock and I contacted Arsenal, they told me they hope to have some soon, so who knows if they will ever be in stock again. Does anyone know if a standard 3 fluted AK firing pin will work (without the spring of course). I wanted to see if anyone tried one in their SLR107. Of course, my main concern is safety. Thank you for reading and I look forward to participating in this forum. Figsy.