Aero Precision gas blocks along with their gas tubes create an efficient and reliable gas system for your AR15 or AR 308 rifle build.

Features:

• Fits barrels with .750 Outer Diameter
• Constructed from 4140 hardened steel
• Nitride 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: It is not recommend to use red thread locker on the threads of the set screws. If you decide to use thread locker the non permanent variety is recommended.