just got some of these in and here's my opinion. They aren't nearly as nice as techs. The curved mags were lopsided in the curve. The mags weren't soldered onto the bars perfectly straight. And the liners I got were in the carts upside down or sideways. There Doesn't seem to be much quality control. Some of the carts fit snug in my hawk grip and some didn't. None of this has ever been an issue with ttech for me. I'm honestly surprised the reviews on here were so good, that's why I bought them. They work but they aren't nearly as nice as I'm used to with t techs. I personally don't think the price difference is worth the quality