This video provides an expert-level analysis of the SIG PE-57 (StG57) during a rigorous mud test. InRangeTV hosts Ian McCollum and Karl Kasarda, recognized experts in firearms, demonstrate the rifle's performance under extreme conditions. They detail the mechanical vulnerabilities of the roller-delayed blowback system to mud ingress and analyze its reliability, concluding that while wet mud causes significant malfunctions, the system can 'self-heal' as the mud dries.
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