Not exactly- If the handgun is of a certain age, the original configuration (of the pistol in your hand) was designed to accept a detachable stock, and its collector value makes it unlikely to be used as a weapon, it can make it onto the ATF list of guns that are approved to be used with the stock without SBR paperwork.ShipWreck said:U have to file ATF paperwork to have a stock on a handgun. I don't think it is super expensive, though - like short barrelling the PS90 (which costs $200 to the ATF)
http://www.atf.gov/firearms/curios/sec3.htmThe Bureau has determined that by reason of the date of their manufacture, value, design and other characteristics, the following firearms are primarily collector's items and are not likely to be used as weapons and, therefore, are excluded from the provisions of the National Firearms Act.