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"..
M1 Carbine
A Resistance member in "Stormfront - Part 1" can be seen firing a M1 Carbine during the assault on the convoy transporting Captain Archer.
Winchester Model 1892
In "North Star", two Model 1892 can be seen hanging on the wall of the sheriff's office.
Machine Guns
Maschinengewehr Model 42
Used in the defence of Vosk's compound in "Stormfront - Part 2" by Wehrmacht ground forces.