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The following weapons were used in Season 5 of the television series Line of Duty:
Central Police Strategic Firearms Command officers, including Sergeant Jane Cafferty (Sian Reese-Williams) and Sergeant Kyle Ferringham (Richard Pepple) carry the Glock 17 as their sidearms. Detective Sergeant Steve Arnott (Martin Compston) and Detective Inspector Kate Fleming (Vicky McClure) are also seen armed with Glock 17's.
Glock 19
A Central Police Strategic Firearms Command officer is briefly seen drawing a Glock 19 in S05E02 during an ambush.
Both Lee Banks (Alastair Natkiel) and Ryan Pilkington (Gregory Piper) of the Organised Crime Syndicate is seen using Uzi's throughout the series.
M1A1 Thompson
A member of the Organised Crime Syndicate is seen briefly armed with an M1A1 Thompson throughout the series.
Heckler & Koch MP5A5
Authorised Firearms Officers from Central Police Strategic Firearms Command are seen carrying the Heckler & Koch MP5A5 whilst guarding Sergeant Jane Cafferty (Sian Reese-Williams). Members of the Organised Crime Syndicate are also seen armed with MP5A5's in S05E02, and obtain more from a stolen cache of confiscated weapons in the same episode.
Heckler & Koch MP5A4
An Authorised Firearms Officer from the Strategic Firearms Command is briefly seen armed with a Heckler & Koch MP5A4 in S05E02.
PPS-43
A member of the Organised Crime Syndicate is seen armed with a PPS-43 during a police convoy ambush in S05E02.
Shotguns
Double Barrelled Shotgun
Evidence photos of deceased Assistant Chief Constable Derek Hilton (Paul Higgins) viewed in S05E02 show a double barrelled shotgun.
Assault Rifles
Heckler & Koch G36C
Authorised Firearms Officers from Central Police Strategic Firearms Command are seen carrying the Heckler & Koch G36C as their main weapon.
A member of the Organised Crime Syndicate is seen with an L1A1 during an ambush on police convoys in S05E01 and S05E02.
M4A1 Variant
An unknown AR-15 variant is seen as one of the weapons stolen from the confiscated cache scheduled for destruction in S05E02. It is later used by Miroslav (Tomi May) during the Eastfield Depot robbery in S05E03.
What appears to be an L85A1 without a carry handle or scope is seen as one of the weapons stolen from the confiscated cache scheduled for destruction in S05E02. Members of the Organised Crime Syndicate are seen using multiple L85A1's (identified as SA80's) during the Eastfield Depot raid in S05E03.
Other
X26 Taser
Central Police Strategic Firearms Command officers, including Sergeant Jane Cafferty (Sian Reese-Williams) and Sergeant Kyle Ferringham (Richard Pepple) carry the X26 Taser as a non lethal weapon throughout the series.