A big box gun store nearby has a model 17 gen 3 for $250. Looks like it's been shot a lot, slide is a little loose, I didn't strip in down, not sure I they would let me if requested. I am thinking about picking it up. I own a 26, but I never attempted to repair or replace any parts. Is there anything that may be worn on a VERY used Glock that can't be repaired at a minimal cost?. I have a brand new Wolf comp barrel in my shop that I could drop in and a box of magazines laying around somewhere, any advice or experience you all can share?