Troy Battle Mags

These look very interesting.

And they are priced right too!

Feed lips and anti-tilt follower are reinforced for strength. A bolstered floor plate is set flush so that it will not catch on other magazines when pulled from a pouch. The Troy magazine is as sleek as it is strong. Operators will save crucial seconds when executing magazine changes.
The specially designed spine eliminates the possibility of over insertion that is common with other polymer magazines.
The Troy BattleMag is engineered to function flawlessly with all M4, M16/AR15, HK416®and FN Scar® rifles and carbines. It comes with flush and shock absorbing extended floor plate.