MP7A1

The MP7A1 is a sub machine gun that appears in some fanon maps.

A Darker Shade of White
The DP-28 appears in A Darker Shade of White as a wall weapon.

Effectiveness
It is one of the most effective LMGs in Zombies. It possesses a power similar to others, but has a higher mobility. It's only comparable con is a smaller clip size, but it comes near the same ammo count.

Paris & Barclay
When Pack-a-Punched it becomes Paris & Barclay. It becomes dual wield and gets a bit of a damage boost. It also get a faster rate of fire, and comes with more ammo.

Justice & Temperance
When Super Punched it becomes Justice & Temperance. It gains a larger clip, more damage and also becomes more accurate.

Trivia

 * The Pack-a-Punched name is a referance to Paris Barclay, a TV director.