I love mine. I've got a colt with a officers slide/lightweight full size gripframe. It came with 2 McCormick/Colt 8 rd mags. Had a lot of FTFs(rounds stuck about 45 degrees to bore centerline and nosedives)probably 1 every 20 rounds +/- and that wasn't even loading the mag full.I got a 24lb wolff recoil spring to slow the slide down which helped a little I think, but still no good. I called Wolff tech dept about replacing mag springs with their "5%extra".Dave said it's kinda hit and miss trying to get short slides to feed reliably off 8 rnd mags.He suggested a their new 7rnd extra power mag.I got one and its been about 240 rnds without a hitch, and all have been starting from full mags,use slide release, top off mag,shoot empty.Slide stop worked every time.I guess you could say I love mine so far.