Aero's gas blocks create an efficent and reliable gas system for your AR15 or AR 308 rifle build. Features fits barrels with .936 outer diameter, low profile for easy fitment and set screws are steel 10-32 x 3/16 knurled cup point.*Note- Roll pin not included. We do not recommend the use of red thread locker on the threads of the set screws. If you decide to use thread locker we recommend using the non permanent variety. Made in the USA.
Specifications:

Type
Model	Low-Profile
Dimensions
Size
Material	Steel
Action
Trigger
Safety
Thread Pattern
Finish	Black Nitride
Bolt Type
Hand
Hammer Type
Capacity