How much is a sig p226 9mm worth if used?

What is the term used to describe the expanded zone of injury in a firearm? I own a Winchesters Repeating Arms New Haven CT Kings Improvment Pat March 29 1856 October 16 1860 Low serial 3323 How do I find Value and history? How do you find the grade on a Remington 1100 shotgun? How old is Sears coldspot fridge model no 106k? How can you find a bolt assembly and clip for a Glenfield Marlin model 25 serial? What is a s and w 38 ctg? What kind of gun uses ammunition that is thinner than a .22? Why should be a hammer gripped at the end of handle? Who makes Jc Higgins sears 22 cal rifle mod 42 dl? What is the value of a 30-30 Winchester made in 1896? Why was the sears roebuc model 300 recalled? What is the history of the Remington model 1922 Targetmaster 22 cal rifle? What is the value of a browning glod metalist worth? How do you get a Targa Automatic Pistol Model GT27B apart? Value of 44 cal ASM pistol serial no D27233? What is the value of a daisy sentinel bb gun in poor condition? How old is the savage springfeild model 67 f pump 20 gauge? Are all Colt New Police revolvers 32 caliber? What year is this gas space heater a f Thompson mfg. co. model 133? Where to look up Serial numbers of guns?