Ray Gun Mark II

"We are going to bring the fans the Ray Gun Mark II. This is an evolution of the fan favourite, the "Ray Gun". It is a true laser gun. It is gonna go through entire trains of zombies."

- Jimmy Zielinski on the Ray Gun Mark II

The Ray Gun Mark II is a wonder weapon that was released alongside the Zombies map, Buried, and is featured in all Zombies maps in Call of Duty: Black Ops II (only if the player has downloaded the Vengeance map pack), in Call of Duty: Black Ops III in all the remastered maps featured in the Zombies Chronicles map pack, and in Call of Duty: Black Ops 4 in Alpha Omega and Blackout. It is the successor and the evolution of the Ray Gun, although, unlike its predecessor, the Ray Gun Mark II fires in three-round bursts with no splash damage. It also has a very high penetration ability, capable of killing many zombies with one burst. Its successor is the GKZ-45 Mk3.

It should be noted that the Ray Gun Mark II has remarkable headshot damage, which is nearly a 21.7x damage multiplier when a shot hits the head. In the later rounds, it is very worthwhile to headshot Zombies, as this multiplier also applies to the Porter's Mark II Ray Gun, making it deal a whopping 100,000 damage per headshot. This is enough to kill with one headshot until round 58, and one burst will kill until round 70. Though its damage will become futile in the early to mid 80's as they will take 4+ bursts in head.

A player cannot carry the Ray Gun Mark II and the original Ray Gun at the same time; In Black Ops II, if the player has the original Ray Gun, it is impossible for them to receive the Ray Gun Mark II from the box, and vice versa. In Black Ops III, it is possible to receive either Ray Gun from the box if another player already has one, although if one attempts to switch out another weapon except for either Ray Gun it will still replace the equipped Ray Gun.

When Pack-a-Punched via the Pack-a-Punch Machine, it becomes the Porter's Mark II Ray Gun. When Pack-a-Punched, the magazine size doubles, the ammunition total increases and it fires red rays instead of green. Overall damage is doubled as well.

Blackout Version
The Blackout version can be found in the Buried area on the east side of the map. The player must throw a combat axe at the dart board in the Saloon, then hold square on the chalk question mark in the Sheriff's Office.

Elemental Ray Guns
In Alpha Omega, there are four elemental Ray Gun Mark II variants. Each one requires a Ray Gun Mark II frame and one of the alternate ammo types available on Pack-a-Punch'd normal weapons. Each alternate ammo type is used in a different puzzle, and each puzzle leads to crafting the distinct elements. As with all other sets of elemental weapons in Zombies, the four Ray Guns each have their own different quirks and abilities. Below is the construction process and details about each variant.

Frame Kit
The Mark II Frames can be used to craft an elemental Ray Gun, or can be simply used to craft a free vanilla Mark II at the workbench in the second floor of Operations.
 * 1) Locate and activate 4 television's which display static and emit a sound static, locations below. Once activated, kill Zombies near the television to charge it, once it is charged a number will be displayed on-screen.
 * 2) *Yellow House Backyard
 * 3) *Diner
 * 4) *Site Entrance
 * 5) *Lower APD Area
 * 6) Enter the numbers into Rushmore in the order which they were revealed. A panel which contains four Ray Gun Mark II Frames will be revealed across from Rushmore.

Ray Gun Mark II-Y (orange element)
The orange element, the Mark II-Y, has explosive rounds (which don't splash damage the player) and a charge shot that causes a wider area of effect. It is very effective at protecting the player from being surrounded, but doesn't carry much ammo. On lower rounds, charge shots aren't advised since single shots can one shot huge groups decently up in the rounds and charge shots spend lots of precious ammo.
 * 1) Obtain a Ray Gun Mark II Frame Kit
 * 2) Obtain a Pack-a-Punch'd weapon with the Brain Rot alternate ammo type.
 * 3) Navigate to the Yellow House Backyard and spawn a Brain Rot Zombie near the green-glowing pile of dirt to the left of the door to obtain the Canister.
 * 4) Next, locate an orange orb which can be found floating above a teleporter pad. Shoot the orb with a Brain Rot weapon, it will then move to a new teleporter pad which you must find. Remember each of these locations, shoot the orb again to reset it to the original position.
 * 5) Obtain the Teleporter Signal Amplifier, place an Amplifier on each of the teleporter pads which the orb positioned itself on.
 * 6) Navigate to the first position and shoot it the orb with the Brain Rot weapon, then follow the orb using the teleporter.
 * 7) Once you have teleported to the second position, shoot the orb again with the Brain Rot weapon to activate the soul circle. Kill Zombies within the circle to fill the Canister.
 * 8) Once the Canister has been filled take it to the build table located on the upper floor of Operations and craft the Ray Gun Mark II-Y.

Ray Gun Mark II-V (yellow element)
The yellow element, the Mark II-V, shoots an electric beam that stuns all the zombies in its path. Its base damage is pretty low, but it has decent headshot damage and constantly regenerates ammo whenever not being fired, even while stowed, much like the Paralyzer. It's a very effective weapon since the player essentially never needs to worry about ammo again.
 * 1) Obtain a Ray Gun Mark II Frame Kit
 * 2) Obtain a Pack-a-Punch'd weapon with the Kill-O-Watt alternate ammo type.
 * 3) Head down to the Generators room and in the room next to a wall there is a circuit box that has sparking yellow electricity coming from it. Shoot the box with the gun that has Kill-O-Watt and pick up the Canister.
 * 4) Head up to the Central Street/Cul-de-sac area and you will see wooden electrical poles around the neighborhood. At the top of one of the electrical poles you are able to notice a yellow spark. Shoot the yellow spark with the gun that has Kill-O-Watt.
 * 5) The pole will now have a glowing yellow orb on top of it permanently, once it does look around the town and find another wooden electrical pole with a yellow spark. Repeat the process until you have shot all the sparks and yellow electricity lines connect from all the poles.
 * 6) Electricity should have collected at a generator outside the front of the Yellow House. Place the Canister in the generator to activate a soul circle. Kill Zombies within the circle to fill the Canister.
 * 7) Once the Canister has been filled take it to the build table located on the upper floor of Operations and craft the Ray Gun Mark II-V.

The Mark II-V is required for the trophy/achievement Ray-gnarok, which requires the player to stun 10 zombies at once. The achievement is rather easy to get with a decent sized hoarde.

Ray Gun Mark II-Z (pink element)
The pink element, the Mark II-Z, is essentially a laser shotgun.
 * 1) Obtain a Ray Gun Mark II Frame Kit
 * 2) Obtain a Pack-a-Punch'd weapon with the Fire Bomb alternate ammo type.
 * 3) Head to the Green House Downstairs and in the kitchen there will be a cabinet with Orange gas coming out of it. Shoot it with your gun that has Fire Bomb on it to reveal a Canister for you to pick up.
 * 4) Head over to the Operations building and you will see that there is purple smoke coming out of the chimney. What you need to do now is shoot the smoke from the house the smoke is blowing towards with your Fire Bomb weapon, or throw a Wraith Fire grenade into the top of the chimney. If done correctly there should be a purple fire in the fireplace inside the house.
 * 5) Place the Canister into the fireplace to activate a soul circle. Kill Zombies within the circle to fill the Canister.
 * 6) Once the Canister has been filled take it to the build table located on the upper floor of Operations and craft the Ray Gun Mark II-Z.

Ray Gun Mark II-X (purple element)
The purple element, the Ray Gun Mark II-X, is full auto, much like the Mark III. It fires extremely fast, roughly as fast as SMGs such as the Spitfire. It does a lot of damage, but it's advisable to fire in bursts to conserve ammo.
 * 1) Obtain a Ray Gun Mark II Frame Kit
 * 2) Obtain a Pack-a-Punch'd weapon with the Cryofreeze alternate ammo type.
 * 3) Head to Prisoner Holding and in there will be a cabinet with Blue gas coming out of it. Shoot it with your gun that has Cryofreeze on it to reveal a Canister for you to pick up.
 * 4) Around the map there should now be zombies spawning that have a blue mist around them. Kill them with your gun that has Cryofreeze and they will drop a blue piece of 115. You must pick up 3 pieces of 115.
 * 5) Once you have 3 pieces of 115 head down to APD Control and in a broken 115 container you can place your Canister, this will activate a soul circle. Kill Zombies within the circle to fill the Canister.
 * 6) Once the Canister has been filled take it to the build table located on the upper floor of Operations and craft the Ray Gun Mark II-X.

When upgraded, it becomes dual wield, making it a true damage output machine that shreds through ammo very quickly.

Retrieval
Once an elemental Ray Gun is crafted, it can be picked up for free even if the player doesn't have the base model. However, it will replace and destroy the normal Ray Gun Mark II if the player has one equipped, even if they're holding their other weapon when they pick it up.

If an elemental Ray Gun is traded out, it will return to the cabinet in Operations over by Rushmore. The player can also deposit an elemental Ray Gun Mark II there for safe keeping or to trade with other players.

General

 * In first-person, the weapon is held like a submachine gun, but in third-person, it is held like a pistol.
 * Due to the different type of rounds used, no splash damage is made by the impacting of the gun's blasts. The Ray Gun Mark II's shots can also penetrate through multiple zombies at once, whereas the original Ray Gun's shots stop upon contact.
 * While its predecessor is reloaded from the front of the weapon, the Ray Gun Mark II is reloaded from the back. They both use the same "cold cell" ammunition, however.
 * The player is pushed back when firing the weapon.
 * The magazine size of the weapon is 21 rounds and there are 162 in reserve. However, 162 is not divisible by 21, leaving the player with seven full magazines and another with 15 shots (5 bursts).
 * When looking down the sights, the three lines inside the sight appear to be floating.

Black Ops II

 * In all maps except Buried and Borough, only one player can obtain the weapon.
 * In patch 1.12, the Ray Gun Mark II was unintentionally added to all maps (several days prior to Vengeance's release for Xbox 360), but was later removed swiftly via a hotfix.

Black Ops III

 * When firing, a thin bolt of green (red if Pack-a-Punched) electricity forms between two prongs extending from the back of the weapon, just above the magazine.

Black Ops 4

 * One of the Pack-a-Punch camouflages on the map Classified depicts a red blueprint of the Ray Gun Mark II.
 * In Blackout, the Ray Gun Mark II's lights are blue as opposed to the normal green.
 * Furthermore, the blasts fired from the weapon are a variation of the normal Ray Gun's, albeit in a blue color. The firing sound is also the same as the aforementioned weapon.
 * The Blackout version is also, instead of being held with 2 hands, held with only 1 hand, similarly to the Ray Gun.
 * In Alpha Omega, none of the Mark II variants have Pack a Punch camos.