other products by KJ Works
Things I liked: I found that 26 BBs fit into this mag, as long as they all zig-zag perfectly into the slot (see below). I'm getting about 65 shots per C02 cartridge, which is about 5x what I get from my gas mags on propane. The extra velocity, recoil, and the little extra weight adds realism too.
Things I would have changed: It can be difficult to get the BBs to fall in a perfect zig-zag pattern in the "double stack" mag occasionally. A BB fill bottle with a one-at-a-time spout helps, but sometimes a pointed tool is needed to reorder the BBs to zig-zag when two adjacent BBs fall onto the same side of the slot.