My last one is not registered anyway as I replaced the pistol grip and it never had all the "evil" accessories that are still going to get you a ride in the back seat of a PD:   No flash suppressor, no telescoping stock, no bayonet lug (like someone is going to hold up a 711 by bayonet!), no forward hand grip and all my mags are 5s and 10s.  Match trigger, free floating barrel, a tack driver.  Still have it as even though it is legal, no FFL wants to deal with a transfer.  Into bolts and levers more now.