Category
page 1Firearm construction
improvised firearm
makeshift ranged weapon
Autofrettage
Autofrettage is a work-hardening process in which a pressure vessel (thick walled) is subjected to enormous pressure, causing internal portions of the part to yield plastically, resulting in internal compressive residual stresses once the pressure is released. The goal of autofrettage is to increase the pressure-carrying capacity of the final product. Inducing residual compressive stresses into materials can also increase their resistance to stress corrosion cracking; that is, non-mechanically assisted cracking that occurs when a material is placed in a corrosive environment in the presence of
gun drill
type of cutter or machine tool for deep hole drilling

homemade firearm
a firearm made by a private individual, in contrast to one produced by a corporate or government entity