Machine Gun, .303, Bren, Mk. I

Overview

Machine Gun, .303, Bren, Mk. I
General Information
Type	Light Machine Gun
Place of Origin	United Kingdom
Period Designed	~1937
Period Produced	September 1937 - ?
Developed From	ZB vz. 26
Developed Into	See variants
Characteristics
Cartridge	.303 British
RoF, Cyclic	500 ~ 520 rpm
RoF, Practical	120 rpm
Action	Gas-operated, tilting bolt
Feed System	Detachable box magazine
Ammunition Loading	30-rnd box magazine
Dimensions
Weight	10.3kg (empty) 11.3kg (loaded)
Barrel Length	635mm
Length	1,160mm
Sights
Sights	Iron sights • Rear drum aperture • Front post

The Machine Gun, .303, Bren, Mk. I, also simply known as the Bren Mk. I, is a British light machine gun developed in the late 1930s from the Czech ZB vz. 26.

Variants

Machine Gun, .303, Bren, Mk. I Original model. 220,000 built. Machine Gun, .303, Bren, Mk. I* ..?. Machine Gun, .303, Bren, Mk. I (M) ..?. Machine Gun, .303, Bren, Mk. II Simplified model. Machine Gun, .303, Bren, Mk. II/I ..? Machine Gun, .303, Bren, Mk. III Short lightweight model from 1944. 57,600 built. Machine Gun, .303, Bren, Mk. IV Mk. II brought up to Mk. III standards. 250 built. Derivatives Machine Gun, 7.62mm, L4A1 Production model of the X10E1. Machine Gun, 7.62mm, L4A2 Production model of the X10E2. Machine Gun, 7.62mm, L4A3 Bren Mk. III conversion to 7.62x51mm with chromium-plated steel barrel. Machine Gun, 7.62mm, L4A4 L4A2 with chromium-plated steel barrel. Machine Gun, 7.62mm, L4A5 L4A3 with steel barrel for the Royal Navy. Machine Gun, 7.62mm, L4A6 L4A1 with chromium-plated steel barrel. Machine Gun, 7.62mm, L4A7 Concept for export, not built. Machine Gun, 7.62mm, L4A8 Unknown. Machine Gun, 7.62mm, L4A9 Model with L7 dovetail. Machine Gun, .280, Bren, Mk. II — TADEN Prototype rechambered for .280 British. Machine Gun, 7.62mm, X10E1 Prototype rechambered Bren Mk. I for 7.62x51mm. Machine Gun, 7.62mm, X10E2 Prototype rechambered Bren Mk. III for 7.62x51mm. Machine Gun, 7.62mm, X11E1 Prototype with a belt-feed chambered in 7.62x51mm. Machine Gun, 7.62mm, X11E2 Machine Gun, 7.62mm, X11E3 Machine Gun, 7.62mm, X11E4 Foreign Ishapore 1A Singaporean model. Lithgow Bren Australian model from Lithgow Small Arms Factory, 17,249 were built from 1940 to 1945.

United Kingdom Firearms & Equipment Interwar & World War II

Infantry Weapons
Melee Weapons	Bayonet	[[]]
	Survival Weapon	[[]]
Sidearms	Pistol	Browning Hi-Power • M1911A1 • Welrod (Mk I • Mk II)
	Revolver	Colt New Service • Colt Official Police • Enfield No. 2 (Mk. I • Mk. I* • Mk. I**) • S&W Model 10
Close Quarters	Submachine Gun	Dineley • Lanchester (Mk. I • Mk. I* • Mod. 1 • Mod. 2) • M1 (A1) • Thompson M1928 (A1) • Patchett • Sten (Mk. I • Mk. I* • Mk. II • Mk. II(S) • Mk. III • Mk. IVa • Mk. IVb • Mk. V • Mk. VI) • Rofsten • Viper • Welgun
	Shotgun	[[]]
Primary Weapons	Assault Rifle	[[]]
	Bolt-Action Rifle	De Lisle Carbine • MLE (Mk. I • Mk. I*) • SMLE (No. 1, Mk. I • No. 1, Mk. III • No. 1, Mk. III* • No. 1, Mk. VI • No. 2, Mk. I • No. 2, Mk. IV • No. 4, Mk. I • No. 4, Mk. I* • No. 4, Mk. I/II • No. 4, Mk. I/III • No. 4, Mk. II • No. 5, Mk. I)
Automatic Support Weapons	Light Machine Gun	Besa • Bren (Mk. I • Mk. I • Mk. I* • Mk. I(M) • Mk. II/I • Mk. III • Mk. IV) • Vickers-Berthier Light Machine Gun
	General Purpose Machine Gun	Browning M1919 • Vickers
	Heavy Machine Gun	Browning M2 • Vickers Heavy Machine Gun
Long Range	Sniper Rifle	SMLE (No. 1, Mk. III* (HT) • No. 4, Mk. I (T) • No. 4, Mk. I* (T)) • SREM-1
Anti-Materiel	Anti-Tank Rifle	[[]]
	Grenade Launcher	[[]]
	Disposable Rocket Launcher	[[]]
	Rocket Launcher	PIAT
Non-Lethal Weapons	Pistol	[[]]
Underwater Weapons	Sidearm	[[]]
	Rifle	[[]]
Explosives	Anti-Personnel Mines	[[]]
	Anti-Tank Mines	[[]]
	Offensive Grenades	[[]]
	Smoke Grenades	[[]]

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	20mm Oerlikon • 20mm Polsten • 37mm ROQF 1-pdr • 37mm ROQF 1.5-pdr • 40mm ROQF Naval • 40mm Bofors • ROQF 76.2mm • ROQF 94mm • 113mm ROQF • ROQF 133mm
Anti-Tank Guns	40mm ROQF 2-pdr • 57mm ROQF 6-pdr • 76.2mm ROQF 17-pdr
Field Guns	75mm M1917 • 84mm ROQF 18-pdr • 88mm ROQF 25-pdr
Mountain Guns	75mm M1 • 94mm ROQF
Howitzers	114mm ROQF • 114mm ROBL • 127mm ROBL 60-pdr • 140mm ROBL • 152.4mm ROBL L/13.3 • 152.4mm ROBL L/35 • 182.9mm ROBL • 203.2mm ROBL • 233.7mm ROBL
Mortars	50.8mm ROSBML • 81mm ROML • 106.7mm ROML
Railroad Artillery	[[]]
Recoilless Guns	[[]]
Rocket Artillery	[[]]

Land Vehicle Weapons
Vehicle Machine Guns	BESA (7.92mm) (Mk. I • Mk. II • Mk. II* • Mk. III • Mk. III* • Mk. III** • Mk. III***) • BESA (15mm) • Bren Gun • Browning M2 • Browning M1919 • FN MAG • Vickers Medium Machine Gun
40mm Tank Guns	ROQF 2-pdr
47mm Tank Guns	ROQF 3-pdr
57mm Tank Guns	Molins Class M Gun • ROQF 6-pdr
70mm Tank Guns	ROQF 12-pdr
75mm Tank Guns	ROQF 75mm • Vickers HV 75mm
76.2mm Tank Guns	ROQF 15-pdr • ROQF 17-pdr • Vickers HV 77mm
84mm Tank Guns	ROQF 20-pdr
87.6mm Tank Guns	ROQF 30-pdr
94mm Tank Guns	ROQF 25-pdr
114.3mm Tank Guns	ROQF 55-pdr
127mm Tank Guns	ROBL 60-pdr
??mm Tank Guns	ROQF 28-pdr
Howitzers	88mm ROQF 25-pdr • 95mm ROQF • 127mm ROBL 60-pdr
Vehicle Autocannon	[[]]
ATGMs	[[]]

Aircraft Weapons & Munitions
7.7mm Machine Guns	Browning Mk.II • Vickers E • Vickers F • Vickers K
11mm & 12.7mm Machine Guns	Browning AN/M2 • Rolls-Royce Experimental Machine Gun • Vickers Aircraft Machine Gun
20mm Cannons	Hispano-Suiza HS.404 • Hispano Mk.II (Mk.V) • 20mm Oerlikon • Oerlikon FF (F • L • S)
40mm Cannons	Vickers S
47mm Cannons	Vickers P
Rockets	RP-3
Bombs	G.P. 250

Naval Weaponry
7.7mm Machine Guns	Vickers Medium Machine Gun
12.7mm Machine Guns	Vickers Heavy Machine Gun
37mm Cannons	37mm ROQF 1-pdr • 37mm ROQF 1.5-pdr
40mm Cannons	40mm ROQF Naval
113mm Cannons	113mm ROQF
133mm Cannons	133mm ROQF