The Yankee Hill machine gas block (.750" diameter barrels) features a front flip hooded sight tower, bayonet lug, and sling loop. The sight base features all steel construction for superior strength in an condition. The sight easily conceals with just the push of a button. The sight is designed to flip up and lock in the deployed position. This bolt on gas block's two piece design makes it ideal for those installations where the muzzle device is not removable.

Specifications and Features:
Yankee Hill Machine YHM-9394-H
AR-15 Gas Block combo
.750" barrel diameter
Front flip hooded sight
Bayonet lug
Sling loop
Bolt on design
Steel construction
Matte Black