A SIG-Sauer P226 is used by Porter while he is in Iraq in Episode 2. Later, Hugh Collinson (Andrew Lincoln) uses a P226 in Episode 6, giving it to Porter while the two are fighting off a militant attack on the Afghan-Pakistani border.
Hakim Al-Naseri (Dhaffer L'Abidine) threatens Porter with a Tokarev TT-33 after he is captured by Iraqi insurgents in Episode 2. Gerald Baxter (Ewen Bremner) also briefly points a TT-33 at Porter during Episode 5.
Due to the series' production in South Africa, the Vektor Z88, the South African copy of the Beretta 92FS, appears to be the handgun used throughout in lieu of the Beretta, notably by various Zimbabwean security personnel, including Colonel Tshuma (David Harewood).
Porter, while working as a security guard at Section 20, is seen disassembling a 3rd Generation Glock 17 in Episode 1. He later seizes another Glock 17 (this one an older 2nd Generation model) from a soldier and uses it while helping Gerald Baxter escape from American custody in Episode 5.
An Astra 680 revolver can be seen in Episode 6, when Sharq (Alexander Siddig) forces Gerald Baxter (Ewen Bremner) to play Russian Roulette, first loading one round, then a second after the chamber clicks empty. Porter eventually convinces Baxter to leave with him and they use the revolver to escape.
Porter is armed with what appears to be a Heckler & Koch MP5KN submachine gun with a red dot sight and suppressor in Episode 2. It should be noted that this was an airsoft replica, as is later revealed when he shows that the magazine is empty at the shootout in the desert, just before his extraction.
The M4A1 carbine is used by John Porter, United Kingdom Special Forces (UKSF) soldiers, and American forces throughout the series, with a variety of different sights and attachments.
Collinson is briefly seen with a L85A2 in the prologue of "Episode 1" (S1E01), before Porter gives him a Heckler & Koch G3KA4 to use during a hostage rescue mission in Basra.
Collinson uses a Heckler & Koch G3KA4 during the prologue in Episode 1 (S1E01). The rifle is equipped with a red dot sight and a tactical weaponlight. The weapon is erroneously referred to as a "Heckler & Koch UMP" in Episode 6, despite the G3 differing in both appearance and caliber from the UMP.
The AKMS is used throughout the series by enemies, including Iraqi insurgents in episodes 1 and 2, Zimbabwean soldiers in episodes 3 and 4, and Afghan militants in episodes 5 and 6. Porter also uses captured AKMS rifles on several occasions while escaping enemy confinement.
Another weapon commonly seen in the hands of enemies are Vektor R5 rifles modified to resemble the AK-47, as distinguished by their angled receivers and Galil-style 5.56mm magazines. These rifles are likely the same as the ones seen in District 9 since armorer Olly Steele worked on both projects.
A bolt-action Truvelo CMS Sniper Rifle sniper rifle was used by Felix Masuku in episode 4 during an assassination attempt on Zimbabwean President Robert Mugabe.
Taliban fighters use an FN MAG machine gun while attacking American Marines in Episode 5. In Episode 6, Porter uses a FN MAG to fend off militants that attack him and Collinson on the Afghan-Pakistani border.
