Sig AMT Disassembly

The Sig AMT was the commercial version of the PE57 military rifle. They were built in 7.62 NATO and used a roller-delayed blowback system very similar to that developed by Germany during WWII and used in the StG45 and HK91 series of rifles. The AMT is built to typical Swiss standards of quality, and is an impressive rifle to handle despite its ungainly appearance.