The Diamondhead Low-Profile Gas Block replaces an existing fixed front sight when installing a Diamondhead VRS X-556 or VRS T-556 hand guard. The low-profile gas block installs quickly with two fastening screws. It is precision bored to 0.75 inches diameter and manufactured from Parkerized steel.

Features:

Clamps to barrel with two fastening screws
Precision machined to 0.75 inches
Replaces existing front sight/gas block

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