Knights AR15/M4 Low Profile Gas Block
Description:
The Knights Armament Low-Profile Gas Block fits AR15/M4 series rifles and was originally used on USSOCOM MK12 Mod1 rifles. The low profile gas block fits inside Knight's Free-Float RAS allowing the RAS to extend past the standard front sight. Inner diameter is 0.750 inches and the gas block attaches with two provided set screws.Reviews
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Perfect fit, well made
It's KAC, you can't go wrong. Used on a Mk12 SPR barrel. High quality product.