I've had this gun for 10-12 years. 18" bbl w extended mag. I've put lots of cheap remmy heavy dove loads though it @ the sporting clay range, as well as slugs and buckshot from varios makers with not a single hiccup, and I don't clean it very often. This gun has the PG stock and wears a butt cuff. I have several other 12g shotguns, including an 18" 870 and an old A-5. I completely trust the reliabilty of the M1-my favorite shooter hands down
