Advanced receiver (Fallout 4)

An advanced receiver is a weapon mod for the .44 pistol, the 10mm pistol, the assault rifle, the combat shotgun, the double-barrel shotgun, the Deliverer and the lever-action rifle $$

Effects
An advanced receiver is the most powerful of the semiautomatic receiver mods one can build or acquire, offering better performance across the board than other such receivers. It offers a more sensitive trigger, improved rate of fire, and damage which is highest of the receivers available (a 75% increase before perks). However, it is generally the last one unlocked, or very rare to find.

Location
Craftable at a weapons workbench or found randomly on various weapons.