I want a short barrel, pistol grip 12ga pump to carry concealed for hiking and jaunts in the Everglades and while driving long trips: How short can the barrel be legally? How much does the Federal stamp cost for this type of weapon with, say, a 12" barrel? Does anyone make custom scabbards with a shoulder strap or over-the-back carry sling? The scabbard would have to conceal the gun completely. Who builds a factory gun of this description, or would it be a custom build?