The handguard proved to be just barely tall enough to fit the Riflespeed Adjustable Gas Control System underneath and with a 10-inch rail the second-longest adjustment knob (due to production shortages I was unable to get the longest version which would have allowed me to use a much longer rail) I was able to have a good bit of the knob left over at the end to make adjustments with. When I put together an upper for this test I made use of an ALG Defense Ergonomic Modular Rail (EMR) V0X 10-Inch handguard. This is necessary due to the overall height of the gas block which measures 1.53-inches tall meaning it can fit underneath most handguards on the market. The Riflespeed system is installed just like any other gas block but uses a straight gas tube instead of the traditionally curved gas tube.
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