Replacement magazine floor plate that adds a picatinny rail for accessory attachment to Springfield XDM models (not compatible with XDM Elite). Takes less than a minute to swap out, and allows you to use Mantis in a variety of training scenarios. Note: There are two variations of the magazine base plate. One with a small "ramp" ( MT-2013) and one that is flat throughout ( MT-2027) . Ensure you select the correct variant. Fits both 9mm and 40 caliber. Part number: MT-2013 and MT-2027