Overview Reviews Product Description Black Rain Ordnance .750 Gas Block, Adjustable, Includes set Screws, Black Finish BRO-LP-750A Product Videos Product Reviews Write a Review Write a Review × Black Rain Ordnance BLACK RAIN LOW PRO GAS BLOCK.750 ADJ Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *