This is the debate I have been having with myself since I started my 603 project. I have no intention of ever selling the gun and would like it to be as close to the real thing as is legally possible. The thought of a custom serial number that marks the family heirloom is intriguing. I have been looking at the NoDak A1 receivers, but in the end, they still have their markings. Of course the gun is transferable, but that's not what I looking for. The flip side of all this is that I would like to shoot this gun and I don't want any issues with the law. Make too good a clone and chance someone thinking you have done something wrong... I've even thought about the altered selector/safety switch that lets the switch go to the full markings, but only for show. Again, I'm starting to think I may be begging for trouble... I currently have an CMMG A2 lower on there and it works great, but it is not correct.
Braceman, PM sent.