Good to hear that it has worked out well for most of you so far. I had to go out and buy a cylinder bore choke for mine, as I did not receive one. Seemed to function, ok for a few rounds afterward. But now my MKA 1919 shotgun is currently broken and needs to be sent back for warranty service. I could try to fix it myself, but not inclined to do home repair and then told I voided any type of warranty. The stock tube has come completely loose, the upper and lower are loose from each other and the gas/take down knob up front is completely seized. Also the fifth round of most of the magazines miss-feeds and jams the action. The front stock/rail is loose and wont hold zero, and the stock sights front and rear need to be retightened with a screwdriver after about ten rounds fired, as they wont stay tight. Only has about 75 rounds through it so far since new and is pretty much a write off at this point. So far, TI has not responded to my phone calls and email. Hopefully I will hear something back from them soon. I guess hindsight being 20/20, I should have taken TI up on their offer to return it with no penalty, when it was noted to not have AR standard grip and rear stock tube.