Range: 100 meters (109 yards).
Target: ISSF olympic pistol 25meter target (we didn't have anything more sensible)...
The gun in question - totally unmodified sans some white paint in front side posts (for dark conditions), the 15min trigger job (google for it) and a G3 sling.
I use GMAGs (continental copies of PMAG, seem to work fine, as far as AR mags work...)
This was used to shoot cans 25-100 meters away. The scope is a "Luger 6x40" el cheapo. Iron sights can be used with success simultaneously (tested). Again, german G3 sling.