Got my 2 Saiga 12's from CDW (awesome service FYI) and took them to the range. Loaded up a Pro mag with 5 rounds of Estate 00 Buck and the gun worked flawlessly right out of the box. Funny thing is the factory extened mag will not fit the gun but the ProMag is perfect. I am sure that will be an easy fix. Second gun same result. Same mag issue. Tried some Slugs (Estate) same result, I had som low brass Diana bird shot and this created a FTE on setting 1, did not try setting 2, I for got my tools and could not move the adjuster by hand. These guns are awsome and I am sure with some tweaking (an