JR· Rest in peace
There has been a successful modification done to the Class 3 M1A around here. It entails drilling a small (.040") hole in the gas plug. This won't affect the semi reliability, but reduces the full-auto rate to between 550-600 rpm. Coupled with the E2 stock, bipod, and muzzle stabilizer, you have an eminently controllable weapon. It's also been used in the M14A1 style configuration with much more success than otherwise would have been found in such a comparatively lightweight system.