A friend recently buried his wife (cancer), and to keep himself busy, took up shooting again. In his zeal to get back into it, (been 20+ years), attended the last two locals shows. 1st show, picked up a Ruger MKI, ok, so far as the 10 round MKII mags "work" in it and it shoots great. Then, he was so happy finding a factory hi-cap mag for his Glock 22 .40 cal for $40...till I saw it later. Yup, LE/Govt only. He was advised! Next show, he picks up a bag of RELOADS for the Glock...mixed brass, unknown origin, etc. He was again advised. Then he comes up with a Ruger P-89 W/15 round mag...or so he thought. I went to see his new toys and took the P-89 to my house for cleaning. Only to discover the "15 round" mag for a 9MM was a .40 cal! (pre-ban, 11 round). No biggy, while the gun was soaking, I reformed the lips to match that of the 9MM. Now that the gun is clean and I can see it close up, I noticed a piece missing where the slide stop passes through the frame! That was the dirtiest gun I ever had the pleasure of seeing! Quite like range rentals. I put it back together and dry cycled the .40-9MM mag...flawless. Then noticed oil coming from a crack in the back of the frame, where the web of the hand holds it! Not good! I have not told him yet. Would anybody else noticed the crack? (not even a hairline) I'm sure the seller knew! Looks like I may have to go with him, next show, for sure!