TacFire's Clamp On Low Profile Gas Block is CNC machined from steel with a erosion resistant parkerized finish. It replaces the an existing A2 front sight and is compatible with 5.56/223 rifle with .705" barrel diameter. A roll pin, screw set and hex wrench. This model has a black finish.
Specifications:

Type	Gas Block
Model	Clamp On
Dimensions	.750"
Size
Material	Steel
Action
Trigger
Safety
Thread Pattern
Finish	Black Parkerized
Bolt Type
Hand
Hammer Type
Max Capacity