Just a little update on the ISSC M22, I now have been using them for months and I have several of them. Blazer .22 40 grain ammo seems to overall work the best. Next is CCI mini-mags then Remington Thunderbolts. This gun likes HV ammo best but it will function with std ammo also, just not as well.
If you want to help the function even more, use a Dremel type tool and a 1/8 inch stone or the like. Reshape the feed ramp where it meets the chamber. You will see that there is a step. If you look at several of them you will see this varies from 1/32 to as much as 2/32 of an inch. This can cause the round to pitch up too soon and jamb from time to time. Now the gun works fine as it is delivered, this just enhances the operation.
Over all my opinion of the gun has not changed, it’s a great Glock style practice gun in a dedicated not converted gun. I still have my Advantage arms conversions for all my Glocks too, but it’s so easy to just pick one up and start shooting. It’s a $200 gun, it does not surprise me that there are things you can do to make it function better. I have owned several .45 ACP’s only one worked well out of the box and it was real expensive.
Magazines are a problem, no one seems to want to stock them, Buds had some when I purchased the last two M22’s from then, they were again out when I last checked. My distributors do not stock them either. I needed to set up an account directly with ISSC so I can purchase magazines directly from them wholesale.
I hope this helps someone using the gun. Go here and see the M22 testing 500 rounds w/o cleaning.
http://www.youtube.com/watch?v=B9KIr3TrqOc ![Wink ;)](./images/smilies/icon_e_wink.gif)