This is the magazine assembly off of a Mr. Bullet Feeder Mini. I've run 10 bullets through it and it works just fine. This is for 9mm/38/357. I'm just going to use the die and the powder funnel. If you've got a Mini and want an extra magazine well here you go. These go for $49.95 online. Plus shipping. Will sell face-2-face in Bellevue/Kirkland area for $40. OBO Will ship.