Cain Arms Glock Magazine Extension +5/6 Round .40 cal 9mm, 17 19 22 23 34 35

Cain Arms Glock magazine extension for 9mm and .40 caliber magazines adds 6 or 5 rounds respectively. Maintains USPSA Limited Division 141.25mm length on full-size magazines. Fits Glock 17, 19, 22, 23, 34, and 35 magazines. Strong, lightweight, black, blue or red/orange polymer. Comes with retention screw to ensure extension stays firmly in place even when dropped. Made in the USA. Magazine not included. Free economy shipping.