Kriss USA KVAMX2K90BL00 Mag-Ex2 Extension Kit Extended 9mm Luger 40rd Compatible w/Glock 17 Gen3-5 17rd Magazines Black Polymer $32.99
Kriss USA KVAMX2K10BL00 Mag-Ex2 Extension Kit Extended 10mm Auto 33rd Compatible w/Glock 20/40 Gen3-5 15rd Mag Black Polymer $32.99
Kriss USA KVAMX2K45BL00 Mag-Ex2 Extension Kit Extended 45 ACP 30 Compatible w/ Glock 21 Gen3-5 13rd Magazines Black Polymer $32.99