Thanks for the answer, I also found that it should be 1/2-20UNF, just wanted to confirm 

^^^^^^Works very well just the way it is. Digital stuff will not improve the performance for the reasons you already stated IMO.
No ITAR restrictions on reloading tool export from the US, may be some export restrictions in Serbia due to EU regs. But OpticsTrade eu operates out of that area with scopes and etc., so, it can be done.ITAR restricts exporting this type of equipment from the US... does anyone know if it also restricts importing?