Grest for the price - Reptilia Black Hole Polymer Magwell for Glock, Gen-3/4

Budget magwell THAT WORKS WITH BACKSTRAPS, and that’s hard to find. I agree with others that there can be a slight gap, but it has no effect on function, and isn’t really noticeable unless you look for it. Easy to install, and a nice upgrade. If you want better, that works with backstraps, it’s going to cost you five times as much. For the price I recommend this, just be reasonable and know what you’re getting.