Used by 'gangster' and partisans against the German Soldiers in Season 4 Episode 1: "Stormfront - Part 1" and Season 4 Episode 2: "Stormfront - Part 2".
Seen used by the alien in the Nazi officer's uniform in Season 4 Episode 1: "Stormfront - Part 1" and Season 4 Episode 2: "Stormfront - Part 2". Tucker also took one in hand.
Shotguns
Winchester Pulse Rifle
A "Winchester Pulse Rifle" is seen in the pilot episode "Broken Bow" (Season 1, Episode 1). Despite the name referring the Winchester rifles, the weapon is in reality a Benelli Nova shotgun mocked up with aluminum add-ons and a light-up red insertable "plasma cartridge".
Submachine Guns
Heckler & Koch SP89
The descendants of the Terra Nova colonists in "Terra Nova" (Season 1, Episode 5) use Heckler & Koch SP89 mocked up with a "futuristic" muzzle attachment. They are used again in "Shadows Of P'Jem" (Season 1, Episode 14) by rebels.
Heckler & Koch MP5SD
The Heckler & Koch MP5SD is carried by soldiers of a pre-warp civilization in the Season 2 episode The Communicator. [1] The weapons appears to be equipped with skeleton buttstocks. They are also equipped with Beta-C magazines.
Thompson
Don't know which model. I will watch the episodes again to see.
MP40
Seen in the hands of World War II German soldiers in Season 4 Episode 1: "Stormfront - Part 1" and Season 4 Episode 2: "Stormfront - Part 2"..
Rifles
Karabiner 98k
Seen in the hands of World War II German soldiers in Season 4 Episode 1: "Stormfront - Part 1" and Season 4 Episode 2: "Stormfront - Part 2"..
Winchester Model 1892
In "North Star", two Model 1892 can be seen hanging on the wall of the sheriff's office.