I have bought 5 different Mark II mags for my Mako, the Mako is just a Mark II in a fancy stock. How do you like it? I have been shooting mine all summer, just came home from firing a couple of hundred rounds. Mine shot really well out of the box, but I have bedded it and I can't help but think it shoots even better. My rifle loves CCI standard velocity and sub sonics, and you can't beat Winchester bulk Dynapoint for practicing. I have shot a few 30m groups with it that rivals some of my more expensive ammo. I am pretty sure you can get mags at Wholesale, and Russell sports both have them for between 22-$24. I prefer the 5 rounders over the 10's. Enjoy your rifle!