Upgraded weapons

The following is a list of the Pack-a-Punch weapons and the differences between them and the normal versions of the weapon.

Call of Duty: Black Ops
For a chart depicting the stats of each weapon before and after it has been Pack-a-Punched, click here.

CZ75 Dual Wield vs Calamity and Jane
Calamity and Jane Gamplay-thumb|300px|right

Wunderwaffe DG-2 vs Wunderwaffe DG-3 JZ

 * ==Cannot be upgraded if received from a Lightning Bolt.==

Trivia

 * Some Pack-a-Punch weapons have the number 115 in their name, a reference to Ununpentium, also known as Element 115, which was related to the creation of the zombies, teleporters and the Wonder Weapons. Also, if one goes to the monitor (after breaking out of the chair at the main menu), one can access a document by Dr. Maxis saying that element 115 can enhance weaponry.
 * A few Pack-a-Punch weapons have numbers that stand for letters, a reference to "leet-speak", a symbolic alphabet that uses a combination of ASCII characters to stand for letters (5 = S, 3 = E, |-| = H, etc.). For example, a Pack-a-Punched AUG is the AUG-50M3, which can be translated as AUG-SOME, which is similar to "awesome".
 * It can be said that on Call of Duty: Black Ops Wii, it seems that all the Pack-a-Punched weapons are green except the Porter's X2 Ray Gun which is black and orange, however this may just be a visual or texture glitch.
 * Weapons from Call of Duty: World at War have a certain Pack-a-Punch camouflage scheme, while the weapons from Call of Duty: Black Ops have a different camo scheme. In Call of Duty: World at War, the camo is a metallic tone, while in Call of Duty: Black Ops, the camo is more of a machinery tone with (what looks like) circuitry covering it.
 * In Der Riese, it is possible to Pack-a-Punch a Mosin-Nagant, a Sawed-Off Double-Barreled Shotgun w/ Grip (The Snuff Box) and an Arisaka (The Eviscerator) through modding (which were cut from the final game).
 * Mustang and Sally is a reference to the song Mustang Sally. On the front of the game's box, the soldier is holding an M1911 that has the word "SALLY" and the number eight in tally marks carved in the side.
 * The Typhoid and Mary is an obvious reference to the actual person Typhoid Mary.
 * The Tokyo and Rose are likely a reference to the actual people nicknamed Tokyo Rose.
 * The Calamity and Jane are likely a reference to the actual person Calamity Jane.
 * Just like the Ray Gun, the Mustang and Sally pushes the user back when fired.
 * The Ray Gun and the Zap Gun Dual Wield are the only Wonder Weapons when Pack-a-Punched have the prefix, Porter's X2.
 * Many Call of Duty: Black Ops guns including the AK47, Kiparis, Stoner63, Skorpion, WA2000, and a removed gun called the Sabertooth were once available in zombies mode with their own pack-a-puched versions, as according to the game files.
 * The Widow Maker is not likely a reference to the horse of tall tale hero Pecos Bill.
 * The Widow Maker is a somewhat common term for something that kills many men.
 * The Widow Maker might also reference the Martin B-26 Marauder,due to the large number of crashes during take offs and landings.