I can't overstate what a huge help this guide was for me. I got a .40 slide for my P30, but didn't realize it wouldn't come complete, so I had to order all the pins and springs and everything separately. I started at the reassembly part of this guide with my pile of new parts, assembled them without any issues even though I've never done any firearm work before, and took it to the range and it worked great! Could NOT have done it without this guide
