JP Enterprises .750 Adjustable Gas Block - Black Stainless - JPGS-5BThe JPGS 5B model is our minimized small bore design intended to mount underneath many hand guard models on the market. This model also now includes our locking adjustment feature, which consists of an integral brass set screw that can be tensioned against the adjustment screw after it has been set to prevent any migration that might occur. Full coverage around gas port providing improved seal and better heat dissipation True clamp on design with four