FIELDSPORT

AR15 GAS BLOCK MICRO LOW PROFILE ULTRA THIN 936

Diameter: .936"
Net Weight: 0.8 oz.
Color: Black
Material: Anodized Aircraft grade aluminum

It is compatibe with .308 & 5.56/.223 Bull Barrel with a .936 diameter barrel. Roll pin & 3 set screws are included. No modification to your barrel is required.