ar15-midlength-length-gas-tube-stainless-gas-block
ar15-midlength-length-gas-tube-stainless-gas-block, Stainless Steel Construction Comes with Roll PinPins into front sight or gas block for Barrel7.5" Low Profile Gas Block for Model 4 /15 Fits 0.75" Regular Barrel and Standard Gas Tube CNC Precision Machining / Hard Anodizing Black Matte Finish