The Mayor is a revolver that fires small shotgun shells. It is Colonel Garret's weapon and a reward from the Law And Disorder storyline. It hits very hard up close from the sidearm slot.
Finish the Law And Disorder storyline. It unlocks in your locker alongside the SSR.
It gives shotgun damage in the sidearm slot, so it works from the bike. Use it on Freakers and humans that close the distance.
Lil' Stubby fills the same role. The PDW and Eliminator are better at range. The Mayor is the pick for raw close-range damage.
.50 BFG
The .50 BFG is a Special Forces sniper rifle sold at Wizard Island from Trust level 2. It hits harder than almost anything in the game and holds 10 rounds. Bring it for Reachers, Ragers and anything you want dead in one shot.
Chicago Chopper
The Chicago Chopper is a drum-fed Military Spec submachine gun sold at Wizard Island from Trust level 2. It has the highest fire rate and a 55-round drum. It is a primary-slot answer to Freaker crowds at close range.
Eliminator
The Eliminator is a Military Spec heavy pistol that can drop a Freaker in one shot. Jacob D'Angelo sells it at Wizard Island from Trust level 2. Expect heavy recoil and 9 rounds a magazine.
Frag Grenade
The Frag Grenade is a military fragmentation grenade you cannot craft. Hot Springs, Lost Lake and Wizard Island sell them from Trust level 3. Use them on human groups behind cover and on tight Freaker packs.