I just installed the third recoil spring today, at just under 500 rounds. I bought R2555 around Thankgiving last year, the previous owner said that only 60 rounds had been fired through her, which was probably true. The first 100 rounds, I had a few failures to feed, but after that it's been very reliable. I have run w/wbox, silvertips , gold dots , Georgia Arms gunshow ammo , and Federal fmj's and the PUP keeps going BANG. What a Great Gun. My Thanks to the Rohrbaugh Forum for all great information.
