|Type||Laser Rifles/Plasma Rifle|
|Number of Ammo||50|
The WG-1-KARASAWA is a right arm weapon that first appeared in the original Armored Core and later in Armored Core: Project Phantasma and Armored Core: Master of Arena. The first member of of the KARASAWA line, the WG-1 is a fast firing, the fastest firing version of the line, and is absolutely devastating. It can take down almost everything within a few shots and is very devastating against most enemies that appear in the original Armored Core games.
Energy weapon. Strong but heavy.
This weapon can be found in the mission Destroy Fuel Depot at the back of the last room where the final fuel tanks can be found. It can be acquired before or after the tanks are destroyed. In Project Phantasma this part cannot be found in the game and the only way to obtain it is by imported a AC1 save. In Armored Core: Master of Arena it can be bought in the shop from the beginning of the game.
- This weapon was classified as a laser rifle in the original Armored Core and Master of Arena and was only classified as a plasma rifle in Project Phantasma. However, in the Japanese version of the games, the Karasawa was known as a plasma rifle in the original Armored Core and Project Phantasma and was only classified as a laser rifle in Master of Arena.
- This weapon got a stat decrease in Armored Core: Master of Arena. Its weight was increased from 1000 to 1120.
- This weapon is the heaviest right arm weapon in all three games it appears in.
- In the original Armored Core game and Project Phantasma it also had the highest Energy Drain among right arm weapons.