Magazine should be a suggested requirement - Lone Wolf Arms Glock 22/31 9mm Threaded Conversion Barrel, 1/2x28

I purchased this barrel almost a year ago for my gen 4 glock 22 40 cal. I wanted to be able to shoot 9mm because I had a couple hundred rounds I had bought for my fathers Ruger which he ended up trading for another gen 4 glock 22 chambered in Sig 357, so my thought was I’ll buy this barrel, and between these two weapons we’d be able to shoot three different kinds of ammunition. I was pleased with the manufacturing quality of the product, it seemed perfect. So I slapped a few 9mm rounds in my 40 cal mag, and went to work. Absolute failure. Ejected the spent cartridge straight up causing the gun to jam. I was disappointed so I started reading, everything I could find pointed to the possibility that this was just a fluke, 40 cal mag should work fine, as far as the videos on YouTube were suggesting. Well I let the barrel sit for months, and finally I decided to give it another shot, but this time I had purchased a couple of 9mm glock 17 pmags. Functioned flawlessly. So the reason I’m giving it 5 stars is to let you know the barrel is well made. I do suggest getting yourself the proper magazines for the barrel. Don’t be me.