The select adjustable gas block allows a near infinite initial adjustment on the fly adjustments without losing your initial gas setting.Its patent pending design was developed to fulfill an order in government programs which required the ability to run suppressed or unsuppressed in the field.This model has a.875 diameter and is constructed of steel with a black melonite coating.

Finish: Black Melonite
Type: Gas Block
Model: Select
Size: .875"
Material: Steel