LMG25: Build 3

Custom builds, Inter-War (1918-1939), LMG25, Machine-Guns, Weapons, WWII

I wasn’t quite happy with some of the pictures from the build post, so I’ve taken some more and added to them.

The bipod, now largely finished, I have welded the ring that goes round the cooling shroud shut and screwed the bipod in place. In some pictures of the LMG25 in use the bipod has been removed and it seems to be used like a heavy assault rifle of sorts, so I’m hoping to keep this removable.

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A better picture of the foresight, the print quality on this piece is really clean and the part is surprisingly solid.

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This was my initial idea for attaching the back-cap/battery compartment cover. Two neodymium magnets (which are very, very strong for their size) meeting the steel receiver. Unfortunately, it isn’t quite strong enough and would fall off easily when running about. I’m adding a bayonet lock for this to keep it solidly attached.

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The bayonet lock is attached to the back cap with araldite. I’ll put two screws into the receiver for them to lock into.

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With the majority of the parts done, I started to prime them to keep the rust at bay.

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The rear sight has been 3D printed in ABS, along with the sight adjustment. I’ll be flipping it upside down so the screw head isn’t visible.

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In situ on the receiver, this gives a surprisingly nice sight picture! The V-notch itself is a little on the small side, but the high position means you get a very nice view of the periphery.

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The back cap locks in really solidly using the new bayonet mount. I’ll have to trim down the securing screw so it sits flat of course.

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The cocking handle has been turned on the lathe, in steel. This was then drilled and tapped blind on the back side so it could be screwed onto the wood.

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The muzzle has been 3D printed in ABS, it will be painted up and secured in place with a screw. The last few bits are just finishing touches, so this is the last build post for this project!

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If you have a thing for obscure Swiss Light Machine-Guns then you can check out the pre-build piece here.

If you enjoyed this content join us over on Facebook and check out our Etsy store. If you have an idea for a custom build of your own get in touch on enquiries.vintageairsoft@gmail.com.

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M2 60mm Mortar: Build 2

Area effect, Cold War, Custom builds, M2 60mm Mortar, Weapons, WWII

The first job of the next leg is to fit the leg limiter. This has two lugs on the centre column and on the left leg. Between this and the attachment at the head of the tripod it helps the user to keep the elevation adjustment vertical, even on sloped or bumpy ground.

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When deployed, the limiter sits pretty much horizontal. The collar it is attached to on the leg slides up and down, with a stop at the top of its travel to make it level out. In these two pictures you can also see the elevation adjustment handle. This piece of steel bar was bent and is screwed and pinned in position so that it can’t rotate without operating the elevation screw.

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The feet are welded onto sockets that fit over the bottom of the legs.

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And are in turn are spot welded onto the legs. These feet will allow the operator to dig the legs into the ground for stability when firing.

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The windage screw has a metal sheath, which I’ll be adjusting to be a nice, close fit. It will also have to have a tooth of some kind to work against the screw.

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With some rather happy timing, these 3D printed parts then arrived. Printed in ABS for strength, if they prove to not be up to the task I shall try casting them in aluminium. I suspect they’ll do beautifully though, these are very solid shapes.

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Roughly put in place, the mortar is really taking shape now. To finish off these parts, I need to fit a large screw to the barrel clamp and screw together the two halves of the windage unit. The windage screw also needs a little modifying to remain locked into the unit, rather than walking out either side.

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The two halves of the windage unit screwed together. This is a very rigid unit, as it needs to be to function. The screw thread is very stiff and it will need a little modification to work smoothly.

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With a little time on the lathe, I reduced the ends of the screw thread down so that they ran smoothly in their mountings. I also drilled and tapped each end for the stoppers that prevent it from leaving the windage control.

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The windage adjustment dial has a folding handle, like the original.
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In place, it sits well and works quite smoothly. I think the barrel vise will need a little re-enforcing for use but it’s not bad even as is.
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A quick demo, it’s a bit awkward videoing and operating it at the same time but it’s easy to use.

M2 mortar windage
 

The last bits are the baseplate and baseplate ball, plus a fair bit of finishing. This thing will take some serious painting!

You can see the previous build post here.

If you are interested in the history of the M2, you can check out the introduction article here.

If you like this project or have an idea of your own, drop us a line on enquiries.vintageairsoft@gmail.com to discuss. ‘Like’ our Facebook page or follow the blog to get regular updates on projects and interesting videos and articles.

Don’t forget you can buy many of our complete products via Etsy.

M2 60mm Mortar: Build 1

Area-effect, Cold War, M2 60mm Mortar, Weapons, WWII

The project started with a good deal of research, finding pictures of all the component parts. From this I calculated dimensions and drew up plans.

The M2 is quite a bit more complicated than the SMBL 2″ used by the British. For my flat laser cut parts, I’m looking at around 3x as many pieces: plus a number of cast or printed parts.

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The baseplate is the first component to be assembled. This heavy plate is designed to stick into the ground to control and direct the recoil.

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Then the feet for the bipod legs and the hinge parts, Although the M2 is complicated, it does fold down quite tidily, which means a lot of moving parts.

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With the legs in place, the mortar starts to take shape. The tube through the middle will have the elevation control going through it, at the top of it will be the T-piece where the windage adjustment will sit.

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The thread arrived, it is a 20mm trapezoidal threaded rod which should be coarse enough to allow quick adjustments to be made, but fine enough to allow for accurate fire adjustment.

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The elevation adjustment screw in place and the T-piece at the top of the column (where the windage screw will go). There is a slit in the back of the column in which a screw sits that locks the inner column into the outer and engages the screw thread.

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When the elevation is raised to maximum, you can just see the thread through the slot at the back, but this will effectively be hidden by the barrel.

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The next components will be the windage adjustment and endcaps. These are going to be 3D printed in ABS for strength and will also have the barrel clamp.

 

If you are interested in the history of the M2, you can check out the introduction article here.

If you like this project or have an idea of your own, drop us a line on enquiries.vintageairsoft@gmail.com to discuss. ‘Like’ our Facebook page or follow the blog to get regular updates on projects and interesting videos and articles.

Don’t forget you can buy our complete products via Etsy.

M2 60mm Mortar: Introduction

Area effect, Cold War, History, M2 60mm Mortar, Weapons, WWII

The M2 Mortar was a US light service mortar designed for close support by infantry at company level. These filled the gap between hand grenades/rifle grenades and the larger (81mm) M1 used at battalion level.

"Members_of_a_Negro_mortar_company_of_the_92nd_Division_pass_the_ammunition_and_heave_it_over_at_the_Germans_in_an_almos_-_NARA_-_535546

The 81mm mortar in use with a mortar company of the 92nd Division.

It has its origins, much like nearly every modern mortar, in the WWI-era Stokes design. It was smoothbore, drop-fired and used a bipod/baseplate system.

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Doughboys with the WWI Stokes mortar.

Light mortars of the inter-war/WWII period fell into two categories: The first were simple, tubes held firmly by the user when fired and aimed by direct line of sight (such as the British SMBL 2″ and Japanese T89). The latter were complex, with coarse thread screws or other systems to control elevation and windage for very accurate controlled fire.

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The M2 fell into the latter category, with an attachment for a sight that could be used for both direct and indirect fire. As a result, it could be used accurately at close to its maximum range (nearly 2,000 yards).

M4-Mortar-Sight

The sight used for the M2.

Post-WWII, the M2 served in Korea and numerous Colonial conflicts with the French, finally in Vietnam. The Chinese also locally produced their own copy. It was eventually replaced in 1978 by the M224 which is still in service today and increased range capacity by about 1/3rd.

 

You can see some footage of the M2 in action here:

The Airsoft version currently being built will fire TAGs and moscarts, with a possibility of using TLSFX shells as well.

 

 

LMG25: Build 2

Cold War, Custom builds, Inter-War (1918-1939), LMG25, Machine-Guns, Weapons, WWII

At the end of the last post, I had most of the large components roughed out for the LMG25. However the cooling ports in the barrel jacket are a little rough at the ends.

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So I welded the outsides edges, so I could grind them down and round out the ends.

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Next I welded up the ejection port.

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And the rear sling swivel, attached to the mount.

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The bipod was an interesting challenge. In order to go from the stowage to the deployed position the lugs all have to rotate, so a little tweaking was needed to make everything move freely.

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The end result is a pretty stable bipod with good movement, allowing the operator to sweep over an arc of fire.

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The dry assembly of the rear sight and ejection port. From this I learned that the ejection port needed a little trimming off the bottom to sit tidily. I also decided to chamfer the edges of the rear sight base to get a deep penetration for the weld.

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The foresight has been 3D printed, it screws into place on the barrel jacket.

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It sits just ahead of the bipod.

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The back-cap is also printed, I may replace this with a cast aluminium version now I have a working kiln.

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Most of the remainder of the work is now detail parts such as the rear sight unit, operating handle and the attachment for the back-cap. 

If you have a thing for obscure Swiss Light Machine-Guns then you can check out the pre-build piece here.

If you enjoyed this content join us over on Facebook and check out our Etsy store. If you have an idea for a custom build of your own get in touch on enquiries.vintageairsoft@gmail.com.

LMG25: Build 1

Cold War, Custom builds, Inter-War (1918-1939), LMG25, Machine-Guns, Weapons, WWII

The LMG25 is a really weirdly formatted gun, but with a Sten and some modifications I’m hoping to make something really interesting and unique.

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As ever, this started with a load of research and design work. There aren’t too many parts to this compared to some of my builds and they nearly all attach directly to the receiver. The first step of construction was to make this receiver, which I made a template for and centre punched for the drill, before cutting the space needed for the donor.

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The welding begins with the mock-upped ejection port and the trigger grouping/pistol grip.

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I also cut a hole for the magazine feed.

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The magazine well has an awkward and distinctive shape, so it is being 3D printed and will be mounted with metal plates and screws to the receiver.

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In place it fits quite nicely! This replica takes AK magazines which look the part well enough from a distance.

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Onto the stock. I cut it out in the usual way from the blank, but I can’t cut out the action recess in the usual manner due to the awkward lump at the front of the stock. It would have been possible to have this as a separate piece but it’s not a major issue to work around.
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The pistol grip unit is, fortunately, an entirely separate unit. This means making it is a lot easier than a one-piece pistol grip/stock. It somewhat resembles some of the early semi-auto conversions of bolt-action rifles in this respect of its design.

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There is quite a pleasing curve to the back of this pistol grip which is easily missed.

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This means that all the major working parts are in place. The next important step is to get the working parts actually working! Then we can enjoy the detailing, sights and bipod.

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If you have a thing for obscure Swiss Light Machine-Guns then you can check out the pre-build piece here.

If you enjoyed this content join us over on Facebook and check out our Etsy store, and if you have an idea for a custom build of your own just get in touch with us on enquiries.vintageairsoft@gmail.com.

British SMBL 2″ Mortar prototype: complete

Area effect, Complete builds, Custom builds, Products, SMBL 2" mortar, Weapons, WWII

At last, the mortar prototype is finished. The shells are steel tube and based on (though not replicas of) the SMBL 2″ mortar shells. The six fins and band at the top hold it straight as it is dropped into the barrel.

Inside you can fit a TAG shell or other 40mm grenade. To recharge them, simply remove the tube, reset the firing pin if needed and re-gas. The tube is held in place by the spring tension of the bottom half, these are taped up for dispatch.

Time for some pictures:

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Although the early models were supplied with an adjustable sight for targeting at different ranges, these were quickly ditched in favour of the single white line up the back for quick lining up. Adjustments could be made by eye.

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This picture shows how the shells come apart to fit a 40mm grenade or TAG shell. The top half just pulls out of the bottom, held in place by spring tension. The shell on the right is taped up ready for dispatch, this isn’t needed for use.

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When loaded, these are very safe to carry. MOSCARTs are notorious for going off when dropped. These shells have a firing pin which is recessed well into the tube which reduces the chance of this happening-prarticularly important when using TAG or solid state launchers.

 

If you want a mortar of your own, please do get in touch at: enquiries.vintageairsoft@gmail.com or join us on our Facebook page. Don’t forget you can buy our complete products via Etsy.

Browning M2HB .50 calibre machine gun

Cold War, Era, History, M2 .50 Machine gun, Machine-Guns, Products, War on Terror, Weapons, WWII

The Browning M2 has its roots in WWI. By the end of this war, both British and French militaries had large calibre machine guns and the Germans had been in the process of developing theirs. The need had come about with the introduction of armour in aircraft and vehicles that repelled most regular arms.

M2_Browning,_Musée_de_l'Armée

The early Browning designs were only half successful. There were water cooled variants but these were heavy and moves to make them air cooled followed quickly. With some effort and consideration, the design developed until one type of receiver could be used to make seven types of machine gun using different barrels, jackets and internal components. It could feed from the left and right which was important for its use in aircraft and it quickly replaced the .30 Browning, then in use for this role.

Browning_M2HB_Normandy

The M2 has been manufactured and in use since 1933 and the design has remained quite unchanged since. It served through WWII with Allied forces, notably by the Long Range Desert Group and the early SAS in North Africa where it was a popular choice for destroying aircraft on the ground in their signature hit and run raids.

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An M2 aircraft variant in use by the SAS in North Africa, WW2.

It also served in Korea and Vietnam, where it was occasionally fitted with a scope and used as an over-sized sniper rifle. As a closed-bolt weapon it was very accurate by MG standards and it was during Vietnam that the longest kill recorded, at 2000 yards (1800m), was set and stood until 2002.

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It has since served in nearly every war of note and many wars you won’t even have heard of. For Western militaries today, it is usually mounted in aircraft or on vehicle turrets, though it is sometimes to be found protecting bases in Afghanistan, where the exceptional range and accuracy is well-suited to the wide, open spaces.

 

I will be building a Browning M2 for a client, plus a turret mounting for the top of a Land Rover.

 

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Cz ZB-26-Bren barrel conversion

Bren, Machine-Guns, Weapons, WWII

A regular client of mine recently got himself a ZB-26 LMG to use as a Bren. There are a few differences between these guns, the main one being the barrel. On the Bren it is a smooth surfaced heavy barrel, the ZB-26 has a fanned barrel for faster cooling. I was commissioned to make the changes.

The original plan was to turn down the fans along the whole barrel, however this turned out to be aluminium and I was concerned about the integrity of the finished product.

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As a result I removed the majority of the barrel from the attachment point that fits into the receiver and turned down that part to fit inside a piece of steel tube.

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As so… a very close friction fit.

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Meanwhile at the other end of the steel tube, the flash suppressor and foresight unit fits nicely over the outside diameter. Underneath is the gas block and two holes that run through the top of this, through which drift pins can be pushed to hold the unit in place.

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At this point I realise I have had a dunce moment. Naturally the barrel is slimmer than the ZB-26 barrel as it hasn’t the cooling fins and the handle mount is much too large.

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Fortunately, making a new one is simple enough, the new lug is brazed onto a piece of steel tube that fits around the barrel.

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The old handle is close enough to the original to be used, so a custom bolt allows this to be removed without tools.

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Finally, the gas block adjustment, which controls the gas flow in the original. Grey polymorph fills in the space.

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And all finished! This unit just needs mounting into the Bren gun and it’s good to go.

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Heavy weapons prototype special

Anti-Tank, Area effect, Area-effect, Cold War, LAW, PIAT, SMBL 2" mortar, War on Terror, Weapons, WWII

Nothing too in-depth today, just a short video showing off some of the prototypes we’ve been working on for over a year…

All of these are now available to order by email, we will be putting up pictures of the finished articles in the next few weeks.

If these products are of interest to you, please do get in touch at: enquiries.vintageairsoft@gmail.com or join us on our Facebook page. Don’t forget you can buy many of our complete products via Etsy.