I hear ya. I found some lowers on impact guns that are stamped "pistol only", but It's not exactly what I want... I'll go talk to my local Sherif to get his input on the "pistol legalities".
Here in PA pistols do need to be registered, so that would be one way to have a paper trail of it originally being a pistol.
Of course.... Then it's registered..... But being a law abiding citizen means playing by the rules set forth... It would be so much easier to be a criminal...........