Seekins Select Adj Gas Block .750 Slide Stop It features an impact-resistant housing

It features an impact-resistant housing with unbreakable polycarbonate lens and is o-ring sealed for water proofing

The geissele reaction block is designed to aid in the assembly of lower receivers

1 large center compartment w/ double zipper

Featuring a

-Grip Bush

Seekins Select Adj Gas Block .750 Slide Stop It features an impact-resistant housingThe 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. 750 diameter and is constructed of steel with a black melonite coating. Finish: Black Melonite Type: Gas Block Model: Select Size: . 750"