Seekins Precision Gas Block, Black Finish, Select Adjustable Gas Block .750

The Select Adjustable Gas Block allows a near infinite initial adjustment using an Allen wrench. To begin, simply turn the gas screw in (reducing gas) or out (increasing gas), whichever you require, and finish by attaching the gas switch for tool-less, on the fly adjustments without losing your initial gas setting. • 40 Position Fine Adjustment • Melonite Coated Tool Steel • Tool-Less Adjustment