Two gold plated Desert Eagle Mark XIXs are duel wielded at the beginning by Hollywood (Sung Kang) and like your typical Hollywood gun, it manages to fire off much more than what the magazine can hold.
Ryan Maslow (Ben Miles) gives Mika Coretti (Naomie Harris) a Glock 26 fore her protection. He mentions that the gun is clean, and it has no serial numbers. Mika uses the Glock throughout the rest of the film, until the Ozunu shootout, when she wields a Beretta Cougar.
A Heckler & Koch USP is used by Ryan Maslow (Ben Miles) as his sidearm throughout the film. One is also seen in the hands of a Europol prison guard guarding Raizo, during the warehouse shootout.
A Tokarev TT-33 can be seen in the hands of the former KGB agent Aleksei Sabatin (Wladimir Tarasjanz) during the flashback of his wife. The TT-33 is anachronistic as the KGB used Makarov PMs.
In the beginning, the second of Hollywood's yakuza's is briefly seen grabbing a P22X from his waist before getting killed by a ninja. It could be either a P220 or a P226, but it's not seen clearly enough to determine it from the single/double-stack bulges. Or the barrell size.
The Heckler & Koch G36 with ZF 3x4° dual optical sights are used by several Europol police officers throughout the film. Most noticeably during the warehouse shootout and the Ozunu base shootout. They are usually seen with tactical flashlights attached.
The Heckler & Koch G36K is also one of the most common rifles in the film. They are mostly seen fitted with ZF 3x4° dual optical sights and a flashlights. They are used by several Europol agents throughout the whole film. Some people might get the longer G36 and the G36K mixed up in this movie, but this is understandable, since most are seen very briefly or in poor lighting conditions.
A Europol agent is briefly seen with a Heckler & Koch MP5K with an Aimpoint sight during the arrest of Raizo.
Ryan Maslow (Ben Miles) uses a plain MP5K during the Ozunu base raid, most notably to fire at Takeshi (Rick Yune). Maslow's MP5K is a MP5KA3 (without the 3 round burst added, unlike in the MP5KA4). It also has the Navy trigger group added, which makes it an MP5KA3N.
Heckler & Koch MP5A3s are used by a majority of Europol agents. They are usually seen with Surefire dedicated fore-grips and mid-range sniper scopes attached.
A Mossberg 500 Cruiser fitted with a pistol grip can be seen in the beginning in the hands of a Yakuza, but gets killed by the Ninja's kusarigama before he gets a chance to use it.
A Franchi SPAS-12 is briefly seen in the hands of a Europol agent during the warehouse shootout. He briefly gets to fire it before his death. It's appereance is very brief and shaky, so screencaps are hard to get.
During the arrest of Raizo (Rain), Europol agents can be seen using a fictional taser. The taser looks like it is based off the real-life M26 Advanced Taser but the movie version is capable of firing actual projectiles similar to the Taser X12. Actually Taser International did use to make some larger models before making the X-26 series, this looks like it could be one of those (originally designated as M-2 or M-3). They were massive, about the size of a service-grade handgun, and are still used, mostly by the military, espiecially for military police purposes. This appears that it might be one of those, or something based upon it.
