The KAK Industry Low Profile Gas Block is precision-machined from 4140 steel with a durable phosphate finish for reliable performance in .750 bore applications.KAK Industry Low Profile Gas Block .750Machined 4140 steel construction with phosphate finishLow profile design for enhanced compatibilityIncludes knurled set screws and gas tube roll pin.425 set screw spacing for secure installationAmerican-made quality componentsDesigned for AR-15 builds requiring a reliable low-profile gas system solution with professional-grade materials and precision manufacturing.