Theres usually an obvious difference between a genuine factory rifle and something thats been assembled elsewhere - not least because a factory rifle has of course been through a rigorous inspection process. Given that there is also a blurring between "elsewhere assembled" Enforcers and a series of reasonably accurate fakes that are also in circulation, I'd never advise anyone to pay the full premium price unless its a 100% genuine example. Better to spend about 15% of the price on an identical-yet-gunsmith-built Enforcer clone, and save the 85% balance for a nice specimen of something else (e.g. you can get a decent No1 MkV and still have change for another old smellie...).