I use SLR Rifleworks magwells on seven guns (34, 34, 19, 19, 17, 19X, and 41) and an Edgar Sherman Design magwell on another. They're well made and I have no complaints about them other than the price. I tried an Agency Arms magwell on one gun and found that it was too low profile (I really want it for the pinky leverage as much as the magwell part). On the lower priced end, I am curious about the Strike Industries magwell but some of their stuff seems very gimmicky.