Scrapper (Fallout 4)

Scrapper is a perk in Fallout 4.

Effects
The extra components that come from scrapping come primarily when scrapping weapons that have less-common modifications attached to them. A standard pipe pistol will still break down into just steel, for example, but if it was equipped with a couple mods, it may also break down into screws or copper.

The same applies to armor, but the effect is less dramatic (significantly less-common modifications are needed to extract the more uncommon/rare components).