Originally Posted by
armatac
The AR-18 is the father of most modern designs and it is awesome, they thought it would crush the AR-15 but it was too late, Look at the G36, SCAR, ARX 160.
The AR has a good manufacturing process though, CNC machines are a dime a dozen, no tooling required, simple boring and on axis alignment, but it really makes all the sense in the world when you consider the gas system and how it doesn't provide the tilting moment. So there is no need for a perpendicular surface to cancel the moment.
There is good and bad with all, but the true piston AR was the AR18, I wonder if it could be brought back by a good name and get any real military sales.