MM S400 Dual Release Magwell

The MM S400 Dual Release Magwell is an updated version of our magwell flare for the S400 that keeps the original shape and function intact but rebuilds the magazine release around two options instead of one. Rather than replacing the paddle release outright, it gives you a choice of how you drop mags depending on what feels faster or safer in your hands.

The set includes an improved, shorter paddle release piece — shortened specifically to cut down on unwanted snagging during play and reduce the chances of the paddle breaking off under stress — alongside a brand new button release piece as a second option. Both are aimed at making magazine changes more ergonomic and less fumbly mid-game, whether you prefer paddle-style releases or a button press.