These gas blocks along with Aero’s gas tubes create an efficient and reliable gas system for your AR15 or AR 308 rifle build.
Features:
- Fits barrels with .875 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*
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