Dawson +1 tool less basepads for STI/SV magazines are CNC machined from billet aluminum for exact fit and long-lasting durability. Cleaning your mags is a breeze with these pads. Slide the lock gate forward, remove the spring and follower, run your hard bristle and soft fiber brush thru the tube, put everything back together and you're done. For high capacity magazines only. I use them on post ban replacement 140mm and 170mm tubes. Available in black, blue, red, and silver.