Here is a factory gun magazine for sten 9mm guns. This is a new 32 round steel gun magazine manufactured by Sten. Made from heat treated steel and uses a steel follower and floor plate. The spring is made from high tensile strength wire. Gunclip Depot has the largest selection of 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. Orders shipped within 24 hours except week-ends and holidays.