I ran into a few snags. my original plan was to mount a rail intended for a 1903A3 which would allow to mount the scope with the handguard ring intact, however I failed to take into account the difference in reciever dimensions between the 03 and A3. so plan B was to buy a 2 piece mount and have the reciever Re-RE-RE drilled and tapped for a 2 piece weaver set however there is not a single gunsmith in the area that is willing to touch it due to the level of bubbafication. so my only option left was to inlet the handguard and handguard ring to allow the original scope rail to be remounted. not my finest piece of work but not horrible either. here it is next to my 1903A4.