NEVER use this stuff in a SiG AMT.

It WILL damage the rifle, sooner rather than later.

Unlike MilSpec brass, the steel cases do not do the correct "grip and float" thing in the fluted chamber and will cause the bolt to unlock EARLY and violently. VERY NASTY

See also the dubious Bulgarian steel-cased stuff that occasionally pops up.

The Chinese stuff is OK in gas-operated or bolt-action rifles, HOWEVER, the primers are the most ludicrously corrosive I have encountered. A good way to find out how good your cleaning procedures are.