Weapon: M60, PKP Pecheneg, RPD, M240B
Perk: Commando
Function: High damage lower Rate of fire sustained suppression.
Reasoning: Alternative to the Stoner with an emphasis on single hit potential and heavy hit power for staggering and suppressing Zeds.
Weapon: Springfield Model 1873, Martini Henry
Perk: Sharpshooter
Function: High single shot damage, lower weight item, without crossbow's ability to pick up used bolts.
Reasoning: An alternative to the Crossbow with the primary positive being a higher stun power and higher damage, but at a cost of being unable to pick ammo up, higher price tag, and slightly slower reload speed. Plus fun reload animations.
Weapon: Winchester Model 1887
Perk: Support
Function: When being fired from the hip fires at a higher rate of fire than if aimed. Fires 10 gauge rounds with more pellets than normal.
Reasoning: Besides having the option of very iconic reloads. Having more pellets due to firing 10 gauge shell it compares closest to the M4 with higher overall damage if more pellets strike, but only having a comparable rate of fire while hip firing.
Weapon: 1866 Chain Pistol
Perk: Gunslinger (Single weapon cross perk with Sharpshooter?)
Function: Massive capacity (20), Single weapon can be "fanned" from the hip for much higher Rate of Fire, Akimbo equipped weapons has almost unrivaled capacity and damage per round at the major disadvantage of having incredibly slow reload times.
Reasoning: A very unique weapon most recently seen in "Hunt Showdown" could be treated as a gap between the Glock 18's Massive ROF and the .500's Massive damage. High damage(lower than .500), High Capacity, And solid Rate of fire (Faster from the hip when using a single model) but a snails pace reload time.