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.

General

 * Some Pack-a-Punch weapons have the number 115 in their name, a reference to Ununpentium.
 * 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)
 * Pack-a-Punch weapons have a different style of camo in Black Ops than they did in World at War
 * The Wunderwaffe DG-2 becomes golden when upgraded in Black Ops.

Weapons

 * .357 Plus 1 K1L-u is leet for ".357 Plus I Kill You"
 * Barracuda FU-A11 is leet for "Barracuda Fuck You All"
 * F1W Nitrogen Cooled is leet for "FTW Nitrogen Cooled" ('FTW' is slang for 'For The Win')
 * The Commando becoming the Predator could be a reference to Arnold Schwarzenegger's films.
 * C-3000 b1at-ch35 is leet for "C-3000 biatches" ('biatches' is slang for 'bitches')
 * Sally is a reference to the M1911 pistol on the cover of Call of Duty: Black Ops. The name Mustang for the second pistol might have came from the classic song "Mustang Sally".
 * AK-74fu2 is leet for "AK-74 fuck you too"
 * M72 Anarchy is a reference to anarchy being the opposite of law.
 * AUG-50M3 is leet for "Augsome", which is a portmanteau of "AUG" and "Awesome".
 * EPC WN is "EPIC WIN" without an "I". It is also a reference to the fact that FN FAL is a "F'N FAIL", or "FuckiNg FAIL" without an "I".
 * G16-GL35 is leet for "Giggles"
 * The Python PaP is called the Cobra, two types of snakes.