Some of you guys might be interested in this stuff for the magpul pmag. I've been shooting them and they rock. First http://www.arredondoaccessories.com/ has a mag yoke and basepad for the pmag. For those that monopod off the mag when shooting prone, on a bench, or off a barricade these work great. The shape is perfect and real stable. Gives you a little more height, and works for shooting at an angle. This set up is real popular for tactical class in 3 gun. As you can imagine mag changes are faster too with the mags yoked together. This is the set up I use everytime I hit the deck at a match. Even though I have a bipod I often use the double mag setup when I don't need the extra stability. The arredondo basepads do not add any capacity and they disasemble just like the regular pmag baseplate by pushing in the inner plate. Next is the nordic components extended basepad. It adds capacity, always bring enough mag. This thing holds 47 though I normally run them at 45 to save on the spring. Runs reliable with the most minor of tuning. Beta mags are kind of hit or miss with reliability, and I typically don't need more than 42 round to finish a stage.