In competition shooting, stage designers love putting out enough targets so that you need 32 rounds to complete the stage. It’s just over the normal capacity of most magazines, meaning that you’re required to perform a reload at some point. To combat those stage designs, people have been hot-rodding their mags, installing 10 or 20 round extensions on the bottom to give them enough ammo to skip the reload. Now, Magpul is making a factory magazine that will hold 40 rounds without the reliability issues of the hacked mags. Looks like Surefire is about to have some competition in the “massive magazine” product segment . . .