Hard to find mag for early model challenger guns. This is a 10rd gun magazine that will fit early model challenger 1 and Medalist guns. This magazine also works in mode of the browning Nomad guns. This is a great mag and it will give you years of reliable service. Gunclip Depot has the largest selection of Browning gun magazines and gun clips. If you do not see the gun magazine you are looking for send us an email and we will try to locate it for you. Buy your gun clips at gunclip depot.