Get a manual.
Pretty much outside the scope of a hobbyist
Gun is not an acronym, and does not stand for nor abbreviate any other word.
Gun rack
Rohm-Gmbh RG Industries. About the cheapest gun you can buy. If you drop it into a bucket of wet cement, it will make a great boat anchor when the cement dries.
Machine gun Kelly
Classic Deluxe
The diameter of the bullets
Against
Pump
a rifle that is on a bipod,tripod,stand,wheels or on a vechile is a gun eg LSW is on a bipod so it is a gun.
Gun Powder is the most important thing in a war because if you don't have gun powder you wouldn't stand a chance.
mac is a small gun. by Vishnu.S