Old Testament Firearms
Old Testament Firearms Low Profile Set Screw Style Gas Blocks for the AR-15 or AR-10 (LR308) are machined with high quality steel and nitrided. The low profile gas block design allows you to mount it underneath any free float hand-guard slim or regular sized. It is not milled out so there is a solid uniform surface that will not collect dust and dirt. Standard barrel diameter is 0.750, but there are several other sizes that will work with other barrel diameters, find the right size for your custom barrel!