These have got to be the best thing Ruger ever did for the 10/22. Sure, there have been butler creek, hotlips, etc for years, but all of the aftermarket 10/22 'hi capacity' mags have been hit or miss at best in my experience. I have 4 BX-25 mags (had those since they first hit the online market), and just made a deal for 3 more of them. They are the cats meow, the bees knees, and any other silly old saying you can come up with. Seriously, best thing since sliced bread isn't saying enough about them. I've not had a single problem with my BX-25 mags, and being able to throw 25 rounds of super cheap 22lr in quick fire is about the most legal fun you can have these days without breaking the bank. The 10/22 is one of my favorite firearms to shoot, a close call between it and the TSG-22 conversion for my Glock. The BX-25 round mags are a HUGE part of what makes my plinker so much fun. Grand Slam on these mags Ruger!