Create a coupler when you need one, tuck it away when you don’t. Bolts T-MAG basepads together to form a rigid coupler. CNC’ed from billet 6061 aluminum and secured with heavy steel bolts — strength is NOT an issue. “Coupled” T-MAGs create a huge support surface when shooting off a bench or prone. Using two mag sizes (one 20- and one 30-rounder works great) provides on-demand ways to change support height. Store/Carry up to 86 rounds on the gun! Easily removed and stored when you want to use the T-MAGS independently. Keep one in your range bag for when you want the most stability possible.