Flatback Invincible Glock Switch – Semi/Full Auto

Flatback/Invincible Glock Switch – Semi/Full Auto Modes quantity [](javascript:void(0);)[](javascript:void(0);)

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The GSS-1 Selector Switch System is a professional-grade, CNC-machined component designed exclusively for qualified entities conducting advanced firearms research, development, and testing under full ATF compliance. This is not a consumer product. Engineered for institutional use, the GSS-1 facilitates controlled, laboratory-grade analysis of automated firing mechanisms, enabling critical data collection on cyclic rate, durability, and system integration.

Every GSS-1 unit is manufactured to exacting tolerances (±0.0005″) to ensure reliable, repeatable performance in a test environment.