A&G Magazine Spacer S&W M&P 9/40 Compact to S&W M&P 9/40 Fullsize Black.
Lets you use a S&W M&P 9/40 Fullsize magazine comfortably in a S&W M&P 9/40 Compact.
Slip-on collar, fills the space between a compact frame and bottom of a full-sized magazine to make a comfortable, hand-filling grip. Contoured to match the frame for improved trigger and recoil control. Ideal when using full-size magazines as backup.