Gas port dis

[bigdaddyjak]

I don’t understand the difference between 2 barrels being exactly the same, accept material. Why the port would be listed as different sizes for each barrel ??? Sorry fat fingers , dia not dis !!

[VASCAR2]

Not every manufacturer is as versed in AR-15’s when you step away from 5.56/223 and use a different cartridge. There is no mil spec to set the industry standard on cartridges like 6.5 Grendel, 6 ARC, 224V and numerous other cartridges used in the AR-15.