The SMP9 is an automatic sidearm with a 30-round magazine. You can buy it at Hot Springs or Lost Lake, or get a better Mil-Spec copy free from Horde Killer. Full-auto in the sidearm slot is great on the bike.
Hot SpringsHot Springs is Ada Tucker's work camp in Belknap, set in an old luxury resort on a dormant volcano. Go here for Alkai Turner's weapons and Belknap jobs, but expect hard rules: Tucker runs it with guards and forced labor.Clear 4 Hordes for the free Mil-Spec version instead of paying. It is better than either shop copy.
It sprays Freakers chasing your bike and backs up a sniper or LMG primary. Make each burst count, since 30 rounds go fast.
The PDW is more accurate and hits harder per shot. Lil' Stubby gives shotgun damage. The SMP9 is the best for volume of fire.
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.
Lil' Stubby
Lil' Stubby is a sawn-off lever-action shotgun that fits the sidearm slot. It comes in three grades, Poor, Better and Pristine, each sold at a different camp. As a sidearm, you can fire it from the bike.
.22 Repeater
The .22 Repeater is a Poor-condition primary rifle you unlock at Tucker's Hot Springs camp. It fires fast and its ammo is everywhere, but each shot hits soft. Use it for early Swarmer packs, then replace it.
Combat Shotgun
The Combat Shotgun is a Military Spec pump-action shotgun sold at Hot Springs from Trust level 3. It hits hard with a tight spread and holds 9 shells. It is the best buyable pump gun in the north.