Suppressed Sten Mk4

The MkIV is the missing link between the most utilitarian Sten, the MkIII, and the final iteration – the wooden-stocked MkV. Very little is known about the MkIVs development and more archival research is needed.

The weapon was on display at the Morphy Auctions booth. While they couldn’t disclose which collection it was on consignment from, they noted it was believe to have been brought home by what they described as ‘a US Commando’. Not the clearest provenance but more might be explained in the auction catalogue when it publishes in a couple of months’ time.

There are several variants of the MkIV – what have become known as the MkIVA and MkIVB. This weapon is one of three examples of suppressed MkIVAs, the others are in the Royal Armouries’ collection.

*A suppressed Sten MkIVA with stock folded (Matthew Moss)*

The Royal Armouries also has unsuppressed examples of the MkIVA and MkIVB. This is an unsuppressed MkIVA. I couldn’t find any decent resolution photographs of the MkIVB but as you can see it has its pistol grip and trigger assembly moved forward significantly.

The gun appears to have been using a Sten MkII receiver and its magazine housing is marked as such. Interestingly, it doesn’t have a MkII serial number, instead it is marked ‘3’. This is similar to one of the MkIV’s held by the Royal Armouries. On the underside of the magazine housing is a further serial number ‘R83297’. Morphy’s noted that they believed the gun, or the MkII receiver used to make it, was produced by BSA.

The trigger mechanism has been moved forward about 1 inch (2.5cm) and unlike any other Sten is enclosed by a large bow trigger guard, suitable for cold weather use with gloves. The unsuppressed MkIVA has a 3.5 inch barrel tipped with a conical flash hider, however, this example is suppressed with what Peter Laidler, in his Sten book, mentions is an MG-D 3748 silencer designed by the Armament Design Department.

One of the most interesting differences is the shorter cocking handle slot in the receiver and the different design of cocking handle. The receiver has been shortened as has the Mk4’s barrel – which has six small ports drilled into it. This gun’s cocking handle is reportedly designed to be rotated 90 degrees to lock the bolt in the forward position. This is a departure from the earlier locking method of pushing the cocking handle down to lock into a hole in the other side of the receiver.

*A suppressed Sten MkIVA with stock unfolded (Matthew Moss)*

The other most distinguishable feature is the folding stock. This design is shared by the A and B variants and is made of a tick steel bar which pivots. The pivot point is in line with the front of the pistol grip. To deploy or fold the stock a small spring-loaded catch is pull towards the butt, this allows the stock to be pivoted through 180-degrees to the left. While the catch locks positively, if the small coil spring which provides tension was damaged the stock would unlock making it difficult to use. The coil spring is also exposed which could allow it to snag on things or become clogged with mud.

But who was the MkIV designed for? According to FWA Hobart’s book on submachine guns the MkIV was developed for airborne troops – a prior to this paratroops had dropped with the stock removed from their Stens. Hobart suggests that the MkIV guns were abandoned because they didn’t fare well in trials due to a high, uncontrollable rate of fire. Whatever the reason they never entered service and only a handful of prototypes were made.

Thank you to Morphy Auctions for letting me take a look at the MkIV – its set to be on sale at their upcoming Firearms Auction in April.

One thing I’m looking forward to doing this year is doing some archival work, digging into the surviving records regarding the Sten and hopefully uncovering more on the MkIV.

*Close up of the right side of the Sten’s receiver (Morphy’s Auctions)*

Update – 01/03/23: Morphy’s auction listing for the weapon has been published and offers some detail on the Sten’s origins and some excellent photographs. Below is an extract detailing the Sten’s provenance:

“This particular specimen was issued to an American officer who was training in England and was intended to be landed in Japan as part of pre-invasion operations in 1945. According to the officer at the time of the gun’s purchase, when the invasion was called off the authorities never asked for the gun’s return. The officer brought the gun back to the United States and subsequently registered it with the BATF.”

Ian over at Forgotten Weapons has also had a chance to look over the weapon and shoot it. Well worth checking those videos out.

Bibliography:

Special thanks to my friend Hrachya Hayrapetyan for helping with the ad-hoc filming of this video!

Entries in the Royal Armouries collection catalogue: 1 2 3 4

STEN MkIV (Prototype), Historical Firearms.info, (source)

Experimental STENs, Firearms Curiosa, (source)

The Sten Machine Carbine, P. Laidler, (2000)

Pictorial History of the Submachine Gun, F.W.A. Hobart, (1971)

Support Us: If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters – including early access to custom stickers and early access to videos! Thank you for your support!

Second World War Anglo-American Ammunition Contract

Recently a very interesting document surfaced in an online auction, while it eventually sold for more than I could afford, I thought it was worth sharing some of the interesting images of the document that were shared in the auction.

*Front page of a draft contract for ammunition, drawn up between the British Purchasing Commission and the Western Cartridge Co. (via War-Office)*

The document is a draft of a contract to order .303 ammunition from the Western Cartridge Company, part of the Olin Corporation. Before the US passed the Lend-Lease Act, in March 1941, which cleared the was for greater material assistance from the US to Britain the British Purchasing Commission was tasked with procuring arms, ammunition and materials from US companies.

*First page of the contract (via War-Office)*

The document, originally drawn up in December 1940 called for a mind-blowing 75 million cartridge per month. To do this the Western Cartridge Company needed to expand its production capacity. The contract deals with the intricacies of expanding the company’s manufacturing base and how this expansion would be paid for.

*A still from a British newsreel c.1942, showing a British ammunition factory.*

The contract states that the .303 ammunition would be for aircraft, for use in weapons like the belt-fed .303 Browning machine guns used in the RAF’s bombers and fighters. The contract mentions that a total of 750 million rounds are required. 20% of these could be requested, at a month’s notice, to be tracer rounds.

It is fascinating to see not only the typed and stapled amendments but also the handwritten notes in the contract’s margins which change quantities, dates and other details. The ammunition is described in ‘Exhibit F’ of the contract as being ‘MkVII .303’. The contract also mentions that the Western Cartridge Company could use its own smokeless powder for the first 100 million rounds and subsequently either their own or powder from Du Pont or the Hercules Powder Company. This means that the ammunition was probably MkVIIIz, as the cartridges did not use Cordite. It is unclear whether the projectiles to be used in the Western Cartridge Co. cartridges used the MkVIIIz boat tail .303 projectile.

A still from a British newsreel c.1942, showing .303 ammunition being tested at a British ammunition factory. The ammunition is being tested in a Vickers Gun, a Bren LMG, a Vickers K and a .303 aircraft Browning

The Western Cartridge Company was not the only US ammunition manufacturer to produce .303. Winchester, another Olin Corporation manufacturer, and the Peter’s Cartridge Company also produced .303 MkVIIIZ.

Sadly we don’t have the rest of the document to examine but these pages offer a really interesting insight into how Britain was procuring ammunition for various weapons during the early part of the war when the situation looked increasingly desperate.

*Pages from the March 1941 contract (via War-Office)*

A subsequent auction listing for ‘Contract No. A-1562. Requisition No. U.S.233. Dated March, 1941’ also calls for a substantial amount of ammunition, some 400,000,000 rounds. The 42 page contract refers to the ammunition as MkVII and notes the use of Hercules Hivel 300 powder and describes it as ‘S.A. Ball .303 with American modifications dated 7 November, 1940’. The March 1941 contract also states that depending on testing it could be used for ground or air use.

If you found this interesting check out our article/video on a unique Remington M1903 Prototype chambered in .303 built for Britain around the same time!

If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters – including custom stickers and early access to videos! Thank you for your support!

Bibliography:

The .303 British Service Cartridge, R. Tebbutt, (source)
Original WW2 British Contract for Manufacture of .303 Ammunition by Winchester, Dec. 1940 eBay/War-Office (source)
Original WW2 British Contract for Manufacture of .303 Ammunition by Winchester, Mar. 1941 eBay/War-Office (source)

British Military Small Arms Ammo, (source)

The Browning Machine Gun – Rifle Calibre Browning Abroad, D. Goldsmith, (2006)
British 303 Cartridge Case Identification, S. Taylor, (source)

Footage:

Manufacture and testing of 0.303″ Ammunition in 1942 (source)

A Look Inside A Heavily Damaged M3 Grant

I recently attended the We Have Ways of Making You Talk podcast’s history festival and one of the most striking things on display was a very rusty, heavily damaged M3 Grant!

The tank, T24193, was one of the first M3 Grants to arrive in Britain in 1941. It was used for cross country and gunnery trials before later in the war it was used as a range target. The owner was kind enough to share some photographs of the tank before it was salvaged.

The tank was salvaged from Pirbright Ranges in Surrey in 2003 and restored mechanically but its external damage is going to be retained as a visual display of its history as a range target. According to the tank’s owner the M3 was used to test captured German Panzerfaust and Panzershreks and has approximately 100 10mm diameter holes from Panzershreks and nearly 400 12-13mm diameter wholes from Panzerfausts fired at the tank. There also appears to be larger holes, perhaps some HESH round damage and lots of small arms strikes or spalling marks.

Here are some photos of the tank:

I would love to read the report on that testing to see what they were trying to find out – a possible research project for the future. The Panzerfaust (capable of penetrating up to 200mm) and Panzershreks (capable of penetrating up to 160mm) definitely penetrated the M3 Grant’s 2 inch frontal and 1.5 inch side armour.

With the tank on display I couldn’t resist getting some video of it, the surreal sight of light coming through both sides of the tank’s hull becomes sobering when you consider that Allied tanks faced the weapons which made the holes, in actual combat.

Fighting On Film: The Enemy Below (1957)

This week we take a look at the Dick Powell-directed naval thriller The Enemy Below. Starring Robert Mitchum as the commander of a destroyer hunting Curt Jürgens’ U-Boat during a cat and mouse battle. Tension ramps as the captain pit their wits against one another. Based on a novel by based on the 1956 novel by Denys Rayner, a Royal Navy veteran of the Battle of the Atlantic, The Enemy Below is an engaging classic of the naval war film genre with some strong performances from its leading men and Oscar winning special effects.

The episode is also available on all other podcast platforms, you can find them here.

Here are some stills from the film:

If you enjoy the podcast then please check out our Patreon here. Be sure to follow Fighting On Film on Twitter @FightingOnFilm, on Facebook and don’t forget to check out www.fightingonfilm.com.

Thanks for listening!

Improvised Bazooka Mine

I recently came across an interesting segment in a January 1945 US Army Combat Bulletin newsreel. It showed men of B Company of the 238th Combat Engineers setting up improvised anti-tank mines in Belgium. The mines were fashioned from Bazooka rockets!

*A still from Combat Bulletin #39 showing an engineer from the 238th Combat Engineer Battalion setting up an improvised off route rocket mine on a fence post (US Army)*

This is a relatively little-known application for the Bazooka’s rockets but a really interesting field expediency. The footage shows engineers cutting the cardboard tubes the Bazooka’s rockets were carried in, down and attaching them to a fence post. Essentially setting up an off-route mine or IED. The engineers run a wire back to cover for remote detonation with some batteries.

*Diagram showing how the rocket could be buried (1944 US Army field manual)*

While these seems quite ad hoc it was a secondary use for the Rocket Launcher’s ammunition which was laid down in the Bazooka’s 1944 basic field manual. It doesn’t appear in the 1943 technical manual for the M1A1 launcher at all but the 1944 manual explains that

“In addition to its use as a projectile when fired from the launcher, the rocket may be prepared for firing electrically and used as an improvised anti-tank mine.”

*Diagram showing the transport packing and transit cannister tube for the M6 Rocket, the tube could be used as a makeshift launch tube (US Army)*

This improvised method of use was also demonstrated in a training film for the Rocket Launcher, a Bazooka team are seen digging a pit in a road and burying a rocket in its makeshift launcher just as laid down in the manual. The training film explains it best…

*A still from the 1943 US Army training film for the Bazooka, demonstrating the setting up of an improvised rocket mine (US Army)*

The 238th Combat Engineer battalion fought in the Battle of the Bulge and received a commendation from Major General Matthew B. Ridgeway, commander of XVIII Corps, for helping to establish a line of defence against the German offensive. The commendation read:

“The work of the 238th Engineer Combat Battalion in the construction of the initial barrier in the vicinity of Manhay was outstanding and materially assisted the Corps in holding off the attack of the enemy in that area.”

*Illustration from a 238th Combat Engineer Battalion Association book showing knocked out German tanks around Grandmenil (238th Combat Engineer Battalion Association)*

Whether this technique of improvising a mine from the rockets was used during the battle is unclear but I found the footage of the engineers demonstrating the set up fascinating. Its always interesting to see suggestions from manuals and training films put into action in the field so I was excited to come across this footage.

If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters – including custom stickers and early access to videos! Thank you for your support!

Bibliography:

238th Combat Engineer Battalion Association (source)

The Ardennes: Battle of the Bulge, H.C. Cole, 1965, (source)

Footage:

The Anti-Tank Rocket M6” 1943 US Army Training Film; M1 & M1A1 Bazookas, War Department

Combat Bulletin No.39, War Department

Fighting On Film: Nine Men (1943)

This week we’re back in the baking desert of North Africa with a forgotten gem from Ealing Studios. 1943’s Nine Men follows a section of British infantry of the Eighth Army, commanded by Jack Lambert, as they’re besieged by attacking Italian infantry. Directed by Harry Watt Nine Men is a gripping and surprisingly visceral film which fans of The Way Ahead and Sahara will love.

The episode is also available on all other podcast platforms, you can find them here.

Here are some stills from the film:

Thanks for listening!

Making Mills Bombs

The No.36 or Mills Bomb was one of the longest serving grenades, developed during the First World War it originated from a Belgian design by Albert Dewandre and Capitaine Léon Roland. It was improved by a British industrialist, William Mills, who owned several metal forging factories.

It entered service in late 1915 as the No.5 Mk1 and continued to be improved during the war with several iterations before it finally became the No.36M Mk1. We’ll look at the Mills bombs development more closely in a future video/article – today, with the help of some 1940s newsreels from New Zealand we’re going to look at how they were manufactured. While the newsreel doesn’t state the factories featured they were made by a number of factories including Anderson Engineering in Christchurch (these were marked with an “A” below the filler plug), Booth Mcdonald, of Christchurch (marked BM), Scott Brothers, also of Christchurch (marked SB), and Mason & Porter, of Mt Wellington, in Ackland (marked MP).

*William Mills’ 1916 Patent for the grenade.*

In the first newsreel, courtesy of Archives New Zealand (Weekly Review No. 70 (1943)), we see No.36 grenades being cast – the newsreel takes a slightly humorous approach of describing the process as a recipe – making ‘pineapples’ – a slang name by which grenades were sometime’s known. The factory is using the sand casting method with a pattern pressed into the sand and then removed. The two halves of the grenade’s body are pressed into sand, a pressed sand core could then be placed inside which would allow the grenade’s body to be poured hollow to allow room for explosives and detonator. If we again pause here we can see a machinist is centring and counter-sinking the filling hole’s first thread for its plug.

*Cast grenade bodies ready for filling (Archives New Zealand)*

The footage includes a brief shot we see a woman factory worker drilling out the top of the grenade’s body and perhaps de-burring the side of the safety lever holder. In the next shot we see more machinists at work with one lady linishing the body of the grenade, removing imperfections from the casting on a grinder or polishing wheel and in the background some women a working on milling machines or drill presses.

*Women factory workers linishing the grenade body castings (Archives New Zealand)*

At the very end of the film we can see the grenade bodies are stacked ready for the next phase of production. Sadly, we don’t see the threading of the filling hole or base in this film nor the painting or filling of the grenades.

In the second newsreel (Weekly Review No. 63 (1942)), however, which celebrates the production of 1 million grenades, we do seem more of the production process. In this short segment we see how the grenades are filled and how they work. We see the cast bodies of the grenades being transported on a conveyor after being shellacked to keep moisture out. If we pause here we can see this worker packing a case with “gascheck” discs and fuses.

*Loading grenades, fuses and gas checks into a transit case (Archives New Zealand)*

The gas check disc and a 7 second fuse was used when the grenade was being fired from a rifle’s cup discharger, while a 4 second fuse was favoured when throwing by hand. In this final clip we see the internals of a grenade – which was filled with just over 2oz of explosive through the round filling-hole (on the side opposite the safety lever) which was then screw plugged. The newsreel then concludes the grenade segment by showing the striker spring inside being compressed and a No.27 Detonator, with fuse, being inserted into the sectioned grenade.

We’ll examine more British grenades, including the No.36 in future videos and articles.

If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters – including custom stickers and early access to videos! Thank you for your support!

Bibliography:

Weekly Review No. 63 (1942)

Weekly Review No. 70 (1943)

W. Mills, ‘Grenade and Other Like Apparatus’, 4 Apr. 1916, US Patent #1178092, (source)

NZ Mills Grenades, Lexpev.nl, (source)

No.36 Mk1 Grenades, MillsGrenades, (source)

Vickers Gun In The Rhineland

In this final video of the Rhineland Campaign Weapons series we take a look at the little known role of the British and Commonwealth forces’ Vickers Guns. With the help of the Vickers MG Collection & Research Association we recreated a platoon line consisting of 4 Vickers Guns to recreate the Pepperpot tactics used during Operation Veritable – the western Allies’ invasion of Germany.

In this video we examine how Vickers Medium Machine Guns were used en masse to soften up enemy positions before Operation Veritable began and during the subsequent advance into the Rhineland. The Vickers was used alongside artillery, mortars and even anti-aircraft guns in what was known as a ‘pepperpot’ fire plan – where the focus was on weight of fire. The Vickers supported the advance through out the campaign and in this video we aimed to capture some of the feel of what those pepperpot bombardments might have been like – albeit on much, much smaller scale.

Using contemporary photographs and footage we recreated the gun pits, complete with overhead cover, pits dug to the original manuals and plenty of empty belts and belt boxes. Right down to the gun crews being badged up as Middlesex Regiment. Check out the comparison of our shoot and a contemporary photograph taken during the battle for Goch, 20 February 1945.

Below are some behind the scenes photos from the shoot taken by myself and Robbie McGuire:

A huge thank you to everyone who made the shoot possible, I’m very proud of what we were able to achieve with this shoot.

If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters. Thank you for your support!

Fighting On Film: 303 Squadron (2018)

This week we examine a Polish film 303 Squadron (Dywizjon 303) with Jennifer Grant, a postgraduate researcher focusing on the Polish Armed Forces in the West during the Second World War. With Jenny as our wingman we discussed the nuances and missed opportunities of this film which follows the exploits of the RAF’s first operation fighter squadron made up of Polish pilots. Immortalised first in 1969’s The Battle of Britain and also revisited in another 2018 film Hurricane, 303 Squadron has a fascinating history but we ask the question – does this film do them justice?

The episode is also available on all other podcast platforms, you can find them here.

Here are some stills from the film:

If you enjoy the podcast then please check out our Patreon here. Be sure to follow Fighting On Film on Twitter @FightingOnFilm, on Facebook and don’t forget to check out www.fightingonfilm.com.

Fighting On Film: The Forgotten Battle (2021)

We are zipping up our Denisons, checking our Rifle No.4s and climbing aboard our Horsa Glider for this week’s look at the brand new Dutch war film ‘The Forgotten Battle‘, directed by Matthijs van Heijningen Jr. it boasts the second largest budget ever for for a Dutch film at around €14 million. With a cast of British and Dutch actors ‘The Forgotten Battle’ is sett during the the Battle of the Scheldt in 1944.

The film is an ambitious attempt to combine three storylines into a film just over 2 hours long. Competently made with some decent performances and a real eye for Mise-en-scène and atmosphere. The Forgotten Battle attempts to cram in too much and largely forgets the ‘Forgotten Battle‘ of the title. While the film brings us three engaging and potentially fascinating story lines that tackle the moral choices that faced soldiers and civilians alike during war, however, there is not enough time or space for them to all develop and ‘The Forgotten Battle’ may have been better adapted as a limited series. We explore all this in this week’s episode!