SPRGFLD MAG XTENSION XDM9/40 BKSTP 2

Springfield XDM, X-tension, Magazine Extension, Fits XDM Compact in 9/40 with 19Rd/16Rd Extended Magazine, Backstrap 2, Black XDM5002C
The Springfield Mag Xtension allows the use of full size magazines in subcompact pistols comfortably.