A&G Magazine Spacer GLOCK 17/22 to 19/23 Black.
Lets you use a Glock 17 magazine comfortably in a GLOCK 19 or a GLOCK 22 magazine in a GLOCK 23.
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.