Submachine Gun, 9mm, L90A1

Overview

Submachine Gun, 9mm, L90A1
General Information
Type	Submachine Gun
Place of Origin	Germany United Kingdom
Designer Companies	Heckler & Koch
Period Designed	1990s (?)
Manufacturer	Royal Small Arms Factory
Period Produced	1990s (?)
Developed From	HK MP 5 K A1
Characteristics
Cartridge	9x19mm Parabellum
RoF, Cyclic	900
Action	Roller-delayed blowback, closed bolt
Firemodes	Full, semi, safe
Feed System	Detachable box magazine
Ammunition Loading	HK MP5 compatible magazines: • 15-rnd • 20-rnd • 30-rnd • X-5: 50-rnd • (More)
Dimensions
Weight	~2.0kg
Barrel Length	115mm
Length	325mm
Height	210mm
Width	50mm
Components
Selector	SEF
Attachments
Sling	Yes
Stock
Stock Type	End cap
Sights
Sights	Low profile
Universal Attachments
Rail Type	HK "claw mount" socket

The Submachine Gun, 9mm, L90A1, also known inversely as L90A1 9mm Submachine Gun, is a German HK MP 5 K A1 submachine gun in service with the British armed forces.

Variants

HK 54 Prototype model. HK MP5 Original production model from 1966 with SEF trigger group and fixed stock. HK MP5A1 Original production model with SEF trigger group and collapsible stock. (?) HK MP5A2 Model with SEF trigger group and fixed stock. HK MP5NA2 Model with 5-1-0 trigger group and fixed stock. HK MP5A3 Model with SEF trigger group and collapsible stock. HK MP5NA3 Model with 5-1-0 trigger group and collapsible stock. HK MP5A4 Model with 5-3-1-0 trigger group and fixed stock. HK MP5A5 Model with 5-3-1-0 trigger group and collapsible stock. HK MP5 MLI Mid-Life Improvement model from 2013 with rail interface systems and with RAL 8000 default colour scheme. Suppressed models (SD) HK MP5SD Original model from 1974 with SEF trigger group and fixed stock. (?) HK MP5SD1 Model with 5-1-0 trigger group and no stock. HK MP5SD2 Model with 5-1-0 trigger group and fixed stock. HK MP5SD3 Model with 5-1-0 trigger group and collapsible stock. HK MP5SD4 Model with 5-3-1-0 trigger group and no stock. HK MP5SD5 Model with 5-3-1-0 trigger group and fixed stock. HK MP5SD6 Model with 5-3-1-0 trigger group and collapsible stock. HK MP5SDN1 ..? HK MP5SDN2 ..? Compact models (K) HK MP5K (Nr. 0001) Prototype model with unique foregrip. HK MP5K Model with SEF trigger group and no stock. HK MP5KN Model with 5-1-0 trigger group and no stock. HK MP5KA1 Model with SEF trigger group and no stock. Low profile iron sights. HK MP5KA4 Model with 5-3-1-0 trigger group and no stock. HK MP5KA5 Model with 5-3-1-0 trigger group and no stock. Low profile iron sights. HK MP5KPDW Compact model with 5-1-0 trigger group and a folding stock. Other models HK MP5/10 Chambered in 10mm Auto. 5-1-0 trigger group and fixed stock. HK MP5/40 Chambered in .40 S&W. 5-2-1-0 trigger group and fixed stock. HK MP5PT .. HK MP5SFA2 .. HK MP5SFA3 .. HK 94 A2 Long barrel semi auto civilian firearm with fixed stock. HK 94 A3 Long barrel semi auto civilian firearm with collapsible stock. Derivatives HK MP5 PT "Plastic Training" model firing plastic ammunition. HK SMG Prototype improved MP 5. HK SP 5 2019 civilian HK MP 5 N A2. HK SP 5 K 2016 updated SP 89 with MIL-STD-1913 Picatinny Rail. HK SP 89 Modified MP 5 K in semi-auto only and with no stock. For export to USA as a pistol, but was banned from import in less than a year. Foreign CS/LS3 Chinese clone. GSG-5 German Sport Guns .22lr conversion. LDT HSG-94 Luxembourgian semi auto HK MP 5 A2. LDT HSG-94K Luxembourgian semi auto HK MP 5 K. OFB Anamika 9mm Indian clone. POF-4 PISTOL Pakistani POF produced semi auto HK MP 5 K. POF-5 PISTOL Pakistani POF produced semi auto HK MP 5 A2 (?). PTR 9 Series of US civilian firearms. RDTS MP5KSD Red Dog Target Supplies custom conversion. Special Weapons MP-10 US-made compact civilian carbine. Special Weapons SP-10 US-made civilian carbine. Submachine Gun, 9mm, L80A1 British service HK MP 5 K. Submachine Gun, 9mm, L90A1 British service HK MP 5 K A1. Submachine Gun, 9mm, L91A1 British service HK MP 5 A3. Submachine Gun, 9mm, L92A1 British service HK MP 5 SD3. T-94A Turkish civilian HK MP 5 A2. T-94K Turkish civilian HK MP 5 K. T-94P Turkish HK 94 A2. T-94SD Turkish civilian HK MP 5 SD2. Tihraga Sudanese MIC produced Tondar. Tondar Iranian DIO produced HK MP 5 A3. Tondar Light Iranian DIO produced HK MP 5 K.

Weapons of the United Kingdom After the Second World War

Infantry Weapons
Melee Weapons	Bayonet	[[]]
	Survival Weapon	[[]]
Sidearms	Pistol	L9A1 • L18A1 • L47A1 • L66A1 • L102A1 • L105A1 (A2) • L106A1 (A2) • L107A1 • L109A1 • L117A1 • L131A1 • L132A1 • L137A1
	Revolver	[[]]
	Machine Pistol	[[]]
Close Quarters	Personal Defense Weapon	[[]]
	Submachine Gun	L2A1 (A2 • A3 • A4) • L34A1 • L49A1 • L50A1 • L51A1 • L52A1 • L80A1 • L90A1 • L91A1 • L92A1
	Shotgun (semi-automatic)	L128A1
	Shotgun (manual-action)	L74A1 (A2)
Primary Weapons	AR	L85A1 (A2 • A3) • L119A1 • (A2) • XL70 • XL73 • XL78 • XL85 • XL86
	AC	L22A1 (A2) • L101A1 (A2) • L119A1 (A2)
	BR	L1A1
	BC	L100A1 (A2)
Automatic Support Weapons	Light Support Weapon	L86A1 (A2)
	Light Machine Gun	L4A1 (L4A2 • L4A3 • L4A4 • L4A5 • L4A6 • L4A7 • L4A8 • L4A9) • L108A1 • L110A1 (A2 • A3) • L130A1
	General Purpose Machine Gun	L7A1 (A2) • L19A1
	Heavy Machine Gun	L1A1 (A2) • L111A1 • L114A1
Long Range	Anti-Materiel Rifle	L121A1 • L135A1
	Bolt-Action Rifle	L8A1 (A2 • A3 • A4 • A5) • L39A1 • L42A1 • L96A1 (A2) • L115A1 (L115A2 • L115A3 • L115A4) • L118A1
	Designated Marksman Rifle	L2A1 • L129A1 (w/ L17A1)
Launchers	Grenade Launcher (Attachment)	L17A1 (A2) • L123A1 (A2 • A3)
	Grenade Launcher (Standalone)	L14A1
	Disposable Rocket Launcher	L2A1 • L72A9
	Rocket Launcher	[[]]
	MANPADS	[[]]
Non-Lethal Weapons	Pistol	[[]]
Underwater Weapons	Sidearm	[[]]
	Rifle	[[]]
Explosives	Anti-Personnel Mines	M18 Claymore
	Anti-Tank Mines	L3A1 • L9A1 (A2 • A3 • A4 • A5 • A6 • A7 • A8) • Mine, Anti-Tank, L14A1 • L17A1 • L18A1 • L27A1
	Practice Mines	L21A1 • L28A1 • L29A1 (A2)
	Anti-Personnel Grenades	L1A1 (A2 • A3) • L2A1 (A2) • L13A1 (A2) • L98A1 • L109A1 (A2) • L106A1 • L107A1 • L109A1 (A2)
	Smoke Grenades	L35A1 (A2) • L36A1 (A2) • L37A1 (A2) • L38A1 (A2) • L50A1 • L52A1 (A2) • L53A1 (A2) • L54A1 (A2) • L55A1 (A2 • A3) • L64A1 • L65A1 • L66A1 • L67A1 • L68A1 • L69A1 • L70A1 • L71A1 • L84A1 (A2 • A3) • L100A1 • L101A1 • L132A1 (A2) • L152A1 • L153A1 • L154A1 • L155A1 • L157A1 • L158A1
	Practice Grenades	L3A1 (A2 • A3) • L4A1 (L4A2) • L16A1 (L16A2) • L28A1 • L56A1 • L73A1 (A2) • L83A1 (A2) • L108A1 (A2) • L110A1 • L111A1 • L115A1

Infantry Equipment
Clothing	Backpacks	[[]]
	Body Armour	[[]]
	Bomb Suit	[[]]
	Elbow and knee pads	[[]]
	Signals & IFF	[[]]
	Suits	[[]]
	Vests & Webbing	[[]]
Headwear	Communication	[[]]
	Gas Masks & Rebreathers	[[]]
	Goggles	[[]]
	Helmets	[[]]
	Vehicle Headwear	[[]]
Optics, Detection and Surveillance	Man-Portable Radar	[[]]
	Mine Detectors	[[]]
	Night Vision Goggles	[[]]
	Periscopes	[[]]
	Rangefinders	[[]]
	Surveillance	[[]]

Artillery
Anti-Aircraft Guns	[[]]
Anti-Tank Guns	[[]]
Anti-Tank Guided Missile Launchers	[[]]
Anti-Tank Guided Missiles	[[]]
Grenade Machine Guns	L134A1
Howitzers	[[]]
Mortars	51mm L9A1 • 60mm M6(H) (-640 • -895) • 81mm L16A1 (A2)
Railroad Artillery	[[]]
Recoilless Guns	[[]]
Rocket Artillery	[[]]
Siege Artillery	[[]]

Land Vehicle Weapons
Vehicle Machine Guns	BESA • Bren Gun • Browning M1919 • FN MAG • L4A4 • L8A1 (A2) • L37A1 (A2) • L43A1 • L94A1
30mm Tank Guns	L21A1
40mm Tank Guns	QF 2pdr HV • CTA40
75mm Tank Guns	QF 75mm • Vickers HV 75mm
76.2mm Tank Guns	L5A1 • L23A1 • QF 17pdr • Vickers HV 77mm
84mm Tank Guns	QF 20pdr
94mm Tank Guns	QF 32pdr
105mm Tank Guns	L7A1 (A3)
120mm Tank Guns	EXP-28M1 • L1A1 (A2) • L11A1 (A2 • A3 • A4 • A5 • A6) • L30A1 • XL30
Howitzers	88mm 25pdr • 105mm L13A1 • 155mm L31A1
ATGMs	BAe Swingfire

Aircraft Weapons & Munitions
7.62mm Machine Guns	L112A1
12.7mm Machine Guns	[[]]
23mm Cannons	[[]]
30mm Cannons	[[]]
37mm Cannons	[[]]
Rocket Pods	[[]]
Rockets	[[]]
Air-to-Air Missiles	[[]]
Air-to-Ship Missiles	[[]]
Air-to-Surface Missiles	[[]]
Anti-Radiation Missiles	[[]]
Cruise Missiles	[[]]
Bombs	[[]]