Support Weapons

M72 Light Anti-Tank Weapon (LAW)

Calibre: 66 mm
Operation: rocket
Rocket: HEAT, M18PIDB warhead, M412 fuse, M54 motor
Feed: single shot and discard
Effective Range: Up to 500m
Impact Sensor: Scrub and foliage proof
Carrying Weight: 10kg
Weight (Rocket): 1kg
Launcher length: (firing mode) 1.5m
Launcher Length: (carrying mode) 1m
Rocket length: 508 mm
Projectile Diameter: 94mm
Temp Range: -46 to + 65 C
Rear Danger Area: 20m

(There were 2 sources of information for the LAW but when the specifications conflicted so I quoted the MOD site)

LAW (Light Anti Armour Weapon) replaced the 84mm Carl Gustav and the US 66mm in service with the British Army. Using the latest materials and explosive technology this one-man portable weapon is capable of destroying main battle tanks at ranges up to 500m. Accurate due to a built-in semi-automatic spotting rifle which reduces aiming errors. Penetrates armour in excess of 650mm. Built-in sight allows good low light performance; night sight provides full night capability. Due to be replaced by NLAW.

The M72 series are one-man, throwaway type rocket launchers. Each consists of two concentric tubes.  The outer tube carries the trigger housing assembly on the top, the trigger assembly, trigger safety handle, rear and foresight assemblies and the rear cover. The inner tube of aluminium will extend telescopically along a channel assembly, which rides in an alignment slot in the trigger housing assembly. The channel assembly houses the firing pin rod assembly and locks the launcher in the extended position. The firing pin rod assembly locks under the trigger assembly and cocks the weapon when the inner tube is extended.

The rocket is made up of the 66-mm HEAT warhead M18, the point-initiating base-detonating fuse M412 and the rocket motor M54. Attached to the nozzle of the rocket motor are six spring-loaded fins, which are folded forward along the motor when the rocket is in the launcher.

When the rocket emerges these fins spring out to stabilise the rocket in flight. The rocket motor is designed to ensure that all the propellant is fully burnt before the rocket leaves the launcher, even under Arctic conditions where the propellant burns more slowly. The HEAT rocket warhead M18 consists of a tapered lightweight steel body, cylindrically shaped, containing 1/41b (340 grams) of octol. The cone is of copper. The nose cap contains a piezo-electric crystal, which is crushed on impact and generates a small electric charge, which is led to the detonator of the base fuse. The rocket and launcher are identified by colour markings. The HEAT rocket is black with yellow stencilling. Five rocket launchers, complete, are packed in a fibre board inner package and three such packs are contained in a wire-bound wooden box. The inner pack weighs 12.5 kg and the outer pack containing 15 rocket systems weighs 54.4 kg.


Claymore Anti Personnel Mine

The Claymore mines first came into regular use with the SAS in the Indonesian confrontation (1963-66) and is still in the SAS inventory today. It is initiated electronically or mechanically, either by hand or by tripwire. When fired, the weapon hurls out 350 metal balls outward in a fan shape to a range of 100m (328ft), the size and velocity of these balls ensuring that anyone in the way is shredded.

(Courtesy of Steve Soper)

The anti personnel mine may have been taken out of service so it’s possible that this is no longer in the SAS’s arsenal, however they will still come across them in the field.


L2A2 Combat Hand Grenade

Length: 84mm
Weight: 395g
Maximum diameter: 60mm
Explosive filling: RDX/TNT 55/45
Weight of explosive: 170g
Fuse: L25A6
Delay: 4,4secs
Lethal radius: 10m

The grenade L2 is a high explosive anti-personnel grenade based on the US M26 grenade and closely resembling it in appearance and performance. It differs in having a separate fuse assembly. It was designed to be thrown by hand or projected from a rifle but the British army has now dropped the concept of rifle-launched grenades.  The L2 grenade has superseded the No 36M-hand grenade. It exists in two variants, L2A1 and L2A2, but the only significant difference between the two is in the design of the fuse holder, which was modified to assist production. The grenade consists of a two part, tinned plate outer casing, a coil of notched wire, a fuse (L25), holder, cap and HE filling. The body assembly (upper and lower) holds the fuse holder in the upper part and the two parts are 40.6 mm (upper) and 36.8 mm (lower) in length and circular in section. The coil is made from steel wire 2.4 mm in section and notched at intervals at 3.2 mm. The HE filling consists of 170 grams of RDX/ TNT.

(I’m not sure where I got this information from, if it’s yours and you want accreditation drop me an e-mail)


Stun Grenade/ Concussion Grenade/ ‘Flashbang’

Length: 134mm
Diameter: 51mm
Weight: 301g
Light: 2.4 million candles
Sound: 174 decibels

A diversionary device used by CT Teams and tactical police units’ world-wide.  Originally developed by the British in the late 1960’s/early 1970’s, the current version releases 2.4 million candles of light and 174 decibels of sound.  When deployed it creates a temporary physiological and psychological response by burning the back of the retina, it forces the victim to hesitate and become disorientated giving an entry team time to move in and resolve the situation.

Flashbangs are sometimes used as warning devices in the field; a trip wire is attached to the pin and laid out. When someone activates the trap the soldiers are alerted to their presence and direction.


White Phosphorus Grenade

Type: white phosphorus grenade
Range: 3-7/20/40
Blast Radius: 0-2/4/8
Damage: 5D/4D/3D, does 3D damage per round to flammable material (including most people) until smothered/submerged, or until the effected bodily areas and/or structures are gone.
Note: will not work in an atmosphere that does not contain freely available oxygen

Purpose: anti-personnel/incendiary (primary), screening (secondary)

The white phosphorus grenade, also known as “Willie Petes”, is a horrifically effective device that is officially listed as a screening device for the grey, wispy, light smoke it produces. Most experienced military personnel know better, using them for anti-material and anti-personnel effects. A Willie Pete consists of a light metal container packed with white phosphorus and a small bursting charge. When the charge detonates, it destroys the container, and spreads the white phosphorous, which ignites on contact with oxygen and burns at approximately 2750 degrees standard (27 and a half time the boiling point of water). The only treatments for WP burns are to submerge in water the effected area, and then pick out the particles (which will re-ignite as soon as they are exposed to oxygen), or cover the WP with copper sulphate to deactivate it. Most professional soldiers consider the use of WP-based munitions to be either a barbaric weapon of last resort, or a highly effective weapon with many suitable applications, depending on their personality.


Satchel Charge

Time-Fused Explosive – The satchel charge is a field-expedient demolition device constructed from TNT or C4, non-electric blasting caps, time fuse, detonating cord, tape, fuse igniters, and some sort of satchel bag. An empty sandbag or demolitions bag can substitute for the satchel. The satchel is filled with a suitable amount of explosives, which are typically primed with two non-electric firing systems. (No more than 6 inches of time fuse are recommended to prevent the charge from being tossed back by enemy personnel or dislodged from a moving vehicle.) The completed satchel is then sealed shut with string, rope, or tape, while leaving the time fuse and fuse igniter hanging outside. The fuse igniters are fired prior to tossing the charge.

The explosives can also be fitted with a radio detonator, allowing a force to get into a secure location before detonation.


Arwen 37mm Grenade Launcher

Calibre         37mm
Capacity        5 Rounds
Overall Length  76.2cm – 89cm (30inch – 35inch)
Loaded Weight   3.8kg (8.4lbs)
Accessories     Trijicon Reflex Sight. Tactical light. Sling. Case. Ammo Belt.

The Arwen 37 is the first multi-purpose, multi-shot weapon system to combine light weight, high accuracy and the ability to fire up to 5 shots before reloading.

High Accuracy – Rifled barrel ensures accurate flight of projectiles
Safety Features – Double action trigger plus fully ambidextrous manual safety
Light Weight – The Arwen 37 is made from light weight aluminium and polymer materials
Reliable Light Weight Rotary Magazine – With minimal rotational torque
Semi-Automatic Function – Each round is automatically indexed at top dead centre
5 Rounds in 4 Seconds Rapid Fire

Easy to Reload – The Arwen has a rotary magazine with a 5 shot capacity and it can be instantly topped up or exchanged with different ammunition types while being held in the firing position
Instant Ability to Check Magazine Status – The ammunition in the ARWEN 37 is visible from the outside of the weapon and the number and type of ammunition can easily be seen
Fully Ambidextrous – Can be fired from right or left shoulder without modification
Telescoping Butt Stock – Suited for any build or height operator

The Arwen is light: 3.08kg (6.84lb) unloaded or 3.8kg (8.38 lb) loaded with 5 AR-1 baton rounds; finished in matt black and, because of its design, is very safe. It is very easy to use, being suitable for right or left-handed operators of any height or build. Exposed parts are made of anodised aluminium alloy and plastics, which are unaffected by damp environments; where steel parts are necessary, they are in shielded positions where they can be kept lubricated and protected from rust. Routine stripping, cleaning, lubrication and reassembly are easily done with the simple tools, brushes and cloths; cleaning brushes and lubricants can be provided.

A carrying sling is provided as standard and an optional carrying case can be supplied with each weapon. The Arwen is easily loaded from a cartridge belt carrying two detachable pockets which are compatible with most military style webbing. The special style of the ammunition makes an important contribution to its weight and space-saving design. The cartridge case safely contains the propellant gases without the support of a chamber; this feature contributes greatly to the simplicity of the system. When a round has been fired the spent case is ejected to the right. Baton rounds used for training can be recovered and refurbished for re-use, keeping down training costs and the projectiles are spun by the rifled barrel, so that they are extremely accurate.

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