Northern Ireland Sterling Clone

From the late 1960s into the 1990s, Northern Ireland suffered a long period of sectarian violence, commonly known as The Troubles. Without going into too much detail about the conflict, other sources do a much better job than I can today, the violence saw Irish Republican paramilitary groups, Ulster Loyalist paramilitary groups and British security forces involved in a protracted low-level conflict with a Republican insurgency fighting not just British forces but Loyalist paramilitaries like the Ulster Volunteer Force (UVF), the Ulster Protestant Volunteers (UPV) and the Ulster Defence Association (UDA). This article/video has no intention to comment on the conflict itself, merely examine a weapon produced during the period.

This copy or clone of a Sterling Mk4 / L2A3 submachine gun is believed to have been assembled by Loyalist paramilitaries although which group and its origins are unclear. Loyalist groups during the 60s and 70s tended to be less well armed and relied more heavily on improvised small arms and weapons stolen from military and police armouries and personnel than Republican groups. When tensions rose in the late 1960s, the Loyalists were largely equipped with obsolete and outdated weapons.

*Right side view of the Sterling clone (Matthew Moss)*

Sammy Duddy, a member of an early Loyalist group, the Westland Defence Association, and later a press officer for the Ulster Defence Association, recalled the dire state of their arsenal at that time:

“[…] we had no guns. The IRA had automatics [machine-guns], high-velocity sniper rifles, powerful pistols, the lot, but we had fuck all. There were virtually no guns on the Loyalist side. The only weapons we had were baseball bats and I just thought to myself, ‘what the fuck are we going to do when they [the IRA] come in with their machine-guns? Throw bats at them?’”

The Ulster Volunteer Force (or UVF) took to stealing what weapons and spare parts they could from the British military and Royal Ulster Constabulary. Weapons assembled from damaged captured Sterlings and Sterling spare parts kits became common. In this case, this weapon has a number of cannibalised original Sterling parts which have been paired with a craft-made receiver tube. From examination we can see that the weapon’s end cap has a Sterling part number stamp ‘CR110’ inside. Similarly the weapon has a factory-made plastic grip. Other factory made parts include the helically grooved bolt, the two recoil springs and the charging handle. There is also seemingly a factory-made trigger group and magazine release button. The magazine is well sized and utilises various parts from a Sterling’s magazine release including the button, an set screw and catch piece.

*The weapon uses a Sterling’s factory-made pistol grip and trigger mechanism – a remarkably sophisticated craft-made weapon (Matthew Moss)*

The trigger assembly housing is welded and ground smooth where it joins with the tube receiver. On factory-made guns there is a visible seam. The poorer quality tube steel of the receiver also appears to have drooped or bent a little around the middle of the weapon. The holes in the barrel shroud are of uniform size but they are roughly drilled and not equally spaced. At the front of the receiver we can see they have retained the barrel with a pair of large bolts, suggesting that the barrel may have been factory made too. There is now end cap catch at the rear nor provision for a folding stock either. While whoever made the receiver tube went to the trouble of added hand stops found on the actual Sterling they are clearly only lightly welded on.

*Close up of the weapon’s magazine housing, with salvaged Sterling magazine release button (Matthew Moss)*

Another difference is the absence of a bayonet lug on the left side of the barrel shroud, and a much cruder fixed sight sat within a U-shaped piece of metal welded to the tube receiver – to act as a front sight protector. The factory-made Sterling’s front sight is adjustable and the sight protectors are folded forward and aligned across the tube receiver. The rear sight and its protectors appears to have sheared off at some point. The only marking on the weapon, ‘29992’, is crudely electro pencilled on the top of the magazine housing, where you’d normally see markings saying ‘Sterling Mk4’ or ‘L2A3’. When that crude serial number was added is unclear. The black paint on the receiver is wearing thin and we can clearly see some file marks in places.

Hundreds of craft-made submachine guns were built to feed from Sterling and Sten magazines and there are numerous surviving examples of guns made from box tubing – often parts were clandestinely made in Northern Ireland’s factories and at shipyards like Harland & Wolf in Belfast – giving rise to the name ‘shipyard special’. Other nicknames included ‘rattlers’ and table leg guns.

*Left side view of the Sterling clone (Matthew Moss)*

The origins and story behind this particular weapon remain unknown, it is today part of a UK Ministry of Defence collection and said to have been found in Northern Ireland during the Troubles. Regardless it’s a very interesting piece of clandestine engineering which shows considerable skill in its assembly. Which is unsurprising as there are numerous accounts of skilled machinists working on illegal firearms parts during the period.

If you enjoyed this video and article please consider supporting our work here. We have some great perks available for Patreon Supporters. You can also support us via one-time donations here. Thank you for your support!

Bibliography:

The Northern Irish troubles | This Week | 1972, Thames TV, (source)

Terminal Effects: The Guns of the Loyalist Paramilitaries, Balaclava Street, (source)

Improvised Weapons of the Irish Underground (Ulster), D. Shea, Small Arms Review, (source)

Beyond State Control: Improvised and Craft-produced Small Arms and Light Weapons, G. Hays and N.R. Jenzen-Jones, Small Arms Survey, (source)

Unpacking 60 Years of Military History

Today we have a bit of an interesting unpacking/unwrapping video. I’ve saved up a few parcels with some new additions to the TAB reference collection and I thought I’d bring you along for the ride. The manuals we’ll be taking a look at span about 60 years of British Army doctrine and weapons. The materials range from a Hotchkiss machine gun manual from 1917 to an AFV identification handbook from the late 60s. There’s some quite interesting and rare stuff here including a 1951 provisional manual for the 3.5in rocket launcher.

These manuals and this sort of primary material is really important because we can learn how the weapons were actually intended to be used. It’s support from our Patreon supporters that enables us to pick up items like these to share in videos. So if you’d like to support our work, check out the TAB Patreon page here.

The Sterling Submachine Gun – Magazine

In May 1946, George Patchett patented a new curved magazine which would become one of the Sterling’s most recognisable features. It addressed some of the serious shortcomings of the STEN’s magazine.

George Patchett’s machine carbine, Which later that came to be known as the Sterling, had been initially designed to use the standard STEN magazine. This makes complete sense as not only was the STEN’s magazine readily available but it stood to reason that the British Army would prefer to retain the large number of magazines it already had in stores.

Capture 04_Moment — A Sterling L2A3 with a disassembled Sterling commercial-pattern magazine (Matthew Moss)

The STEN’s magazine is, however, the gun’s weakest link. Its a double-stack, single feed 32-round magazine was difficult to load and could feed unreliably when not looked after. The Patchett prototype performed well during initial testing in 1943, but later sand, mud and arctic testing of the Patchett against various other submachine guns highlighted the limitations of the STEN magazine – regardless of the weapon using it.

At some point in 1945, Patchett developed a series of new magazines, a 20-round ‘Patrol’ magazine, a 40-round ‘Standard’ magazine and a 60-round ‘Assault’ magazine. By late 1946, these had been superseded by a 35-round magazine designed to fit into the basic pouch of the British Army’s 1944 Pattern web equipment.

Patchett addressed the STEN magazine’s shortcomings by designing his magazine with a curve which allowed the slightly tapered 9×19mm rounds to feed more reliably. He also replaced the traditional magazine follower with a pair of rollers which minimised friction and allowed dust, grit and dirt to be rolled out of the way improving reliability. Patchett’s magazine was designed so it could be economically stamped from sheet metal and folded and spot welded into shape. It was also simple to disassemble for cleaning and requires no tools for disassembly.

By 1951 the magazine had been largely perfected but a trials report suggested that the magazine’s feed lips needed to be reinforced. Despite this the Sterling was said to be “better than all other weapons tested.” Following further development and testing the L2A1 Sterling submachine gun was eventually adopted in the summer of 1954. We will cover the development, adoption and service of the Sterling at a later date.

In 1952, Patchett added a pair of strengthening ribs to the inside of the magazine which also further reduced friction on the rollers. He also replaced the oval follower spring with a more efficient circular one with the ribs acting to hold it in place. The final production magazines held 34 rounds and were substantially easier to load than the earlier STEN’s.

The L2A1/MkII, introduced in 1954, was the first Patchett to incorporate an angled magazine housing which improved feeding reliability from the Patchett’s patented curved, double stack, double feed magazine. The Sterling’s magazine housing was angled forward slightly at 82-degrees.

The magazines used by the British military differed from Patchett’s design. The British government, perhaps unwilling to purchase the rights to manufacture Patchett’s design, developed the ‘Magazine, L1A2’. Nearly two million of these were built at Mettoy, Rolls Razor, ROF Fazakerley and the Woolwich Royal Laboratories. The L1A2 magazine was slightly simpler to manufacture but retained Patchett’s roller follower while the magazine’s body was made from two, rather than four, pieces of stamped steel and electrically welded together. The government-designed magazine is 5cm (2 inches) longer than Sterling’s magazines.

The example magazine seen above and in the accompanying video is Sterling-made and is marked with the company name and patent numbers. We can see the folded sheet metal construction and the overlaps at the rear of the magazine body.

When Canada adopted the C1, a modified version of the Sterling, they dispensed with Patchett’s roller system and designed their own magazine which held 30, rather than 34 rounds, but could be used in all Sterling-pattern guns.

On the front of the magazine is an over-insertion stop built into the edge of the magazine body, at the rear is another magazine stop with a flat spring which limits rattle and helps properly align the magazine in the breech for optimal feeding.

Bibliography:

The Sterling Submachine Gun, Matthew Moss (2018)
[Copies of the book are available here]

If you enjoyed the video and this article please consider supporting our work here. We have some great perks available for Patreon Supporters. You can also support us via one-time donations here.