How think is 16 guage?

What is a J C Higgins Sears model 590 03 side-by-side 20 gauge Model 100 shotgun made in Spain by AYA worth? How much is a hy score arms corp model 109.22 short pistol worth? What is a slingshot rifle? What is jc caylens whole name? Who invented the silencer? What is the value of a colt single action army 45? When was the Union Arms Company in business? What is the value of a 1931 Colt 38 Super? Concelled a gun? Do a electric weed eater have littke bb's in it? What calibers available for Remington spr-94? What is the value of a 44 magnum carbine rifle semi-auto 4 shot? What is the age and value of a 94 Winchester serial number 2582800? Where can you get parts for a Charles Daly 12 gauge shotgun? Are butterfly knives illegal in Houston Texas? How many people have died by gun violence in Chicago? Where is the serial number on a Stevens Savage Arms Model 77D 12 Gauge pump shotgun? Can a convicted felon own a shotgun in the state of Texas? What is the value of a 16 gauge T Barker double barrel shotgun with Belgian steel barrels? What does it mean if the bore of a gun is dark?