Firearm modification

Standard Ruger 10/22 Carbine on top, and a highly modified version below, all done by the owner with drop-in parts
A gunsmith customized Ruger 10/22 by Clark Custom Guns.

Firearm modification is commonly done in order to enhance various aspects of the performance of a firearm. Reasons for these modifications can range from cosmetic to functional, and can be simple operations that the owner can perform, or complex operations requiring the services of a gunsmith.