Wanted to try a Harpoon run through of the game and found the Harpoon is a very subpar weapon. while mods already exist that improve it they add extra ammo and make it function like a basic gun. I decided to keep it in flavour of a single shot gun and so no extra clip.

Adds extra upgrades, including mag, receiver, and muzzle upgrades to the Harpoon gun.

Changes.

Mag upgrades have 4 levels and each level increases damage, applies to original barbed and fletchette mods.

New Mag mods
Heated Harpoon
Superheated Harpoons that glow and emit small amount light. Does bonus energy damage and burn over time as well as burn critical death effect.
Requires Science

Rocket Harpoon
Fires Rocket harpoons that have no drop and longer range, slower and less damage then a normal harpoon but has a small AOE.
Requires Demolition and is effected by both heavy weapons and demolition.

Receiver upgrades
Rusted Action(default)

Oiled Action
+10% Damage +50% reload speed
No requirements

Oiled and Lapped Action
+20% damage +100% reload speed.
Requires gunnut3

Muzzle mod
Baffle
Reduces recoil, increases accuracy and reduces sound level slightly while making sandman apply to attacks with the Harpoon gun.
Requires Gunnut 3

Scopes
Small scope has no requirements to build

A recon scope can now be built
Requires 3 science/2 gunnut.

General change
Harpoon general range increase.
Harpoons can be created at the Chem Bench under Utility.
They require 10 steel, 2 aluminium, and 1 oil for 2 harpoons.

Bug fix
Harpoon guns could never spawn with any upgrades, now they can spawn in shops/mobs with upgrades includes my new mods.

Attack time in vats was set to one second for Harpoon gun, Vats often would time out and kick the player back to normal game without shooting a Vats Harpoon shot. Changed to 0.5 seconds and now Harpoons will fire in vats far more reliably.