The .410 bore or 28-gauge H&R Handy-Gun is a single-shot pistol, with 8" or 12.25" smoothbore barrel, made from 1921 to 1934 by Harrington & Richardson Arms Co., Worcester, Massachusetts. Shares internal parts with H&R Model 1915 (No. 5) shotgun, but Handy-Gun's shorter receiver is designed for a pistol-grip, its barrels won't fit No. 5 and these firearms are serial numbered separately. About 54,000 H&R Handy-Guns were manufactured, nearly all for 2.5" shells. Production halted after government ruled H&R Handy-Gun to be a "firearm" in the "any other weapon" category under NFA, when its retail price was about $16. An H&R Handy-Gun with an 18" smoothbore barrel is subject to NFA. NOTE: Rare variations command premiums: 8" barrel, 25 to 50 percent; 18" barrel (rarest), 200 to 300 percent; unchoked .410, 20 to 30 percent; 28-gauge or Model 3 (only) with factory-equipped original detachable shoulder stock, 150 percent or more; holster, $75 to $200; serial matching box, $100 to $200 or more (i.e., a box for an 8" barrel 28-gauge could be quite expensive). IMPORTANT! This gun is considered a Class III firearm by the Federal Government. This means that it is illegal to possess unless it has been previously registered with the BATFE. Any transfer must be registered with the BATFE. There is currently no way to legally register an unregistered Class III firearm.