Our take: This full metal magazine, for the WG 1911 Special Combat Sport 601 Series CO2 Non Blowback Airsoft Pistol, features an easy-load CO2 cartridge chamber and has a 16 round capacity. Unlike the stock magazine that comes with the WG Sport 601 1911 CO2 Pistol, this magazine does not have the cumbersome and unsightly external CO2 tightening screw. This replacement magazine features a flat base plate, with an internal flat head screw to seat the CO2 cartridge. No airsoft player wants to be caught unprepared on the airsoft field without a spare magazine! Pick up a rugged full metal WG Sport 601 CO2 1911 backup magazine today! Specifications: Construction: Full Metal Capacity: 16 rounds Package includes: 1x Full Metal WG Sport 601 CO2 1911 Magazine