Home / AR's / ETS – Glock magazine – fits glock 21 .45 cal – 18 rd capacity (fits 21, 30, 41) – ETS – Glock magazine – fits glock 21 .45 cal – 18 rd capacity (fits 21, 30, 41) – Category: AR's Product ID: 12517 Description Description ETS – Glock magazine – fits glock 21 .45 cal – 18 rd capacity (fits 21, 30, 41) – Related products AR15/AR10 Brass Catcher ERGO 2 AR15/AR10 Grip Kit Suregrip ambi camo imperial Blackhawk Knoxx AR Pistol Grip – FDE Pearce Grip – Grip enhancement for 1911