These gas blocks along with our gas tubes create an efficent and reliable gas system for your AR15 or AR 308 rifle build.
- Fits barrels with .625 Outer Diameter
- Constructed from 4140 hardened steel
- Choose No Aero Logo or Aero "A" Logo blocks
- Nitride or Phosphate coating
- Low profile for easy fitment
- Set Screws are Steel 10-32 x 3/16 Knurled Cup Point
- Made in the USA
- *Roll pin not included*
Please note: 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.