You talk with people whom have shot or own the original AR10’s and they mention that they are lighter and have significantly less felt recoil than any modern day AR10, or 308AR. Apparently when they engineered the M16 from the original 7.62 AR10s, they made some signifigant changes to the design. Then when 308ARs were resurrected, they engineered them from the already modified M16 design, making for pretty major changes from the original ones. I would like to get an opportunity to shoot an original some day, just to see what they are talking about.