I have a new iver Johnson hp-18 semi auto 12 gauge. It has had 12 rounds through it to test function and then has been hanging out in the safe. It is a 3 inch chamber and it holds 5+1. So far it has cycled everything but 2 3/4 number 7. That stuff was a little to light but that might get better after break in. It did cycle number 6 just fine though and obviously everything heavier than that. The stock has a push button detect that allows the stock to come off and just have the pistol grip on it. It is pretty handy for stashing it in confined spaces. I’m asking for 265. If you are interested txt 972977407two. I’m between Wylie and Greenville and can meet near either. Thanks for looking.