the recoil spring (the big one that runs the length under the barrel). where can i order one? is there a website? as far as the explanation of how it happened... this was my first handgun (kimber sis custom) and while i was reassembling it i forgot to push the barrel link forward so when i put the slide stop in it didn't catch, and the slide slid forward coming off the gun and slightly bending the spring. there's no actual bend mark on the spring but it's overall shape isn't as straight as it was before the careless mistake. it was just a careless error on my part as i am learning.