Nice design. I just wish it wasn't that expensive. I like the one with the flashlight mount and rear pressure switch. It's especially impressive when he puts his full weight on the rifle. I know. It only takes money...sigh I realize I'm on a Mako kick tonight, but I've only looked at their E-Lander mags, and I was curious to see what else they had to offer.
http://www.themakogroup.com/product_p/gl-shock.htm
http://www.themakogroup.com/product_p/gl-shock.htm