Fallout 4 weapon mods

Overview
The new weapon mod system is greatly improved and revised. Now you can build pistol to an assault rifle, machine pistol to a sniper rifle. Weapon mods can be built from raw materials and attached to weapons at weapons workbenches. There will be over 700 mods, including scopes, barrels, stocks, and more. For Guns weapons, usage of Gun Nut perk is required, while for Energy Weapons, Science! perk is required to modify.