The Heckler & Koch MP5 is used by Rigspolitiet officers stationed at Hotel Tasiilaq.
Error creating thumbnail: File missingArmed Rigspolitiet officers rush to detain Minister Marius when he barges into the convention hall in the 4th episode.Error creating thumbnail: File missingIn this distant shot, you can make out the solid stock. However, it's not enough to determine if it's (at least) an MP5A4.
Assault Rifles
AK-74M
What seem to be AK-74Ms are seen in a Russian military cadet photo in the sixth episode.
What seems to be an AKS-47 with tactical is seen with Russian troops deployed on a rendition operation in the eighth episode. The one shown appears to be an AEG.
The Colt M4A1 is seen with American airmen in the seventh episode.
Error creating thumbnail: File missingColt M4A1 Carbine with M68 Aimpoint reflex optic and Knight's Armament RAS railed handguard and vertical forward grip - 5.56x45mmError creating thumbnail: File missingThe American airman on the left with the carbine in the seventh episode during a hostage rescue op.
Heckler & Koch G36K
The Heckler & Koch G36K is seen with Danish troops working under the Joint Arctic Command (JAC) when they're ordered to raid the Swedish oil research ship RSV Per Berger at the end of the first episode. This is not correct since Danish troops are now equipped with Colt Canada-made C8IUR carbines. Its either any C8IUR carbines were not made available due to CC's policy of collaborating with TV/Film production companies or because the G36 is widely used in European-based TV productions.
The M1917 Enfield is used by Sirius Dog Sled Patrol soldiers throughout Greenland. In the 2nd episode, armed mercenaries disguise themselves as SDSP soldiers by killing them and taking their gear.
A Winchester Model 70 is seen in the second episode with Nanu Alataq (Fartato Olsen) when he appears in Kimmernaq's video to protest against what's happening in Greenland due to climate change. Enok sometimes uses it in the show. Liv uses it in the seventh episode before she was taken prisoner.