Here is a great gun magazine for High Standard Duramatic guns. This is a 10rd 22lr gun mag at a great price. This gun magazine is made in the USA by Triple K. Gunclip Depot has the largest selection of high standard 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 magazines and gun clips at gunclip depot.