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.

M16 vs Skullcrusher
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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 only in Der Riese.

Weapons

 * In Der Riese it is possible to Pack-a-Punch a Mosin-Nagant, a Sawed-Off Double-Barreled Shotgun w/ Grip (The Smuff Box) and a Arisaka (The Eviscerator) through modding (which were cut from the final game). Since Treyarch referred to the Arisaka as the Type 99, this caused many players to mistake it for the Type 99 LMG, which could also be acquired through modding, but without a Pack-a-Punched variant.
 * Weapons' upgraded names mostly include references to internet slang and 115, while dual-wielded weapons are invariably *blank* and *blank* where the removal of 'and' would render an existing name.
 * Internet "leet" references include;
 * .357 Plus 1 K1L-u is leet for ".357 Plus I Kill You"
 * Baracuda FU-A11 is leet for "Baracuda Fuck You All"
 * F1W Nitrogen Cooled is leet for "FTW Nitrogen Cooled" ('FTW' is slang for 'Fuck The World' and 'For The Win')
 * C-3000 b1at-ch35 is leet for "See 3000 biatches" ('biatches' is slang for 'bitches')
 * AK-74fu2 is leet for "AK74 Fuck you too"
 * G16-GL35 is leet for "Giggles".
 * AUG-50M3, is leet for AUG-SOME, which is a portmanteau of AUG and the word "Awesome".
 * The Commando becoming the Predator could be a reference to Arnold Schwarzenegger's films.
 * 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".
 * M72 Anarchy is a reference to "Anarchy" being the opposite of "Law".
 * The Olympia's upgraded name name is Hades, a reference to the Greek underworld and leader. Olympia is where the Greek Gods reside, besides Hades, making Hades opposite with Olympia.
 * FN FAL can be pronounced as "FUCKING FAIL" or "EFFIN FAIL", while EPC WN can be pronounced as "EPIC WIN".
 * When the CZ75 Dual Wield is upgraded, it will become the Calamity & Jane, a reference to Calamity Jane, known for her claim of being an acquaintance of Wild Bill Hickok
 * The HS-10 is transformed into Typhoid and Mary, a reference to Typhoid Mary who infected and killed over sixty people with typhoid without her own knowledge.
 * The Python and Cobra are both families of snakes and revolvers made by Colt.