The Low Profile Gas Block from BCM features a black phosphate finish and steel construction. Manufactured within very tight Mil-Spec tolerances, this block is designed for use with .75 barrels.
Specifications:

Type	Gas Block
Model	Low-Profile
Dimensions
Size	.75"
Material	Steel
Action
Trigger
Safety
Thread Pattern
Finish	Black Phosphate
Bolt Type
Hand
Hammer Type
Capacity