Holster

 is a Tier 4 Tank that upgrades from Submachine at level 45.

Design
The is simply a Submachine with a Trapper on the back of it.

Trivia

 * Despite having a rear mounted Trap launcher, this tank does not branch from Trap Guard.
 * Strangely, it is also the same tier as Gunner Trapper despite Submachine upgrading from Pelleter.