I tried posting this yesterday but for some reason it never showed up in the forums so I'll try again. I recently purchased a never fired 1994 Glock 19. After thoroughly cleaning and lightly lubing it I took it to the range a couple days ago and put one hundred rounds through it. In general I'm really happy with it but in those hundred rounds I had in the neighborhood of four stove pipes, five failure to feeds and at least three times where the slide did not lock open after the last shot. I was using the original 1994 Glock magazine and a Korean KCI magazine, both fifteen rounders, and I was loading three to four rounds per firing cycle. I suppose the issues could be magazine issues or maybe the gun just needs more rounds to loosen up, but I'm also wondering if it could be a recoil spring assembly problem. (not allowing the slide to move all the way back, leading to the loading and extraction problems) Could the spring tension INCREASE after fifteen years of no use? I'm considering ordering a Wolff spring assembly but thought I'd ask here first. Any comments would be appreciated.