HwaSan double barrel shotgun APS shell conversion mod

[svman]

And so it begins

[blobface]

Sure just send me a PM with yout adress. Do you have a Hwasan host gun or do you need a complete gun?

 

I have a Hwasan host gun indeed, so I'll only really need the rear "frame" and the mechanism, we'll talk further on PM. 

[paranoiddroid]

If you can do some 3d work up of where whole action I'd be really obliged I want to try to build an over under, iv got plans and patent drawings of a few different ones to try and build an action based off a real ones mechanism to use as shells so any help or suggestions would be just amazing!

[svman]

I think it would be difficult to adapt the hudsons or the hwasans mech to work in a under and over configuration. You would have to change every single part and will be easer to start from scratch.

[Cesare]

I think he is right it could not easily be adopted. But that being said, I think it is a great project. Always wanted a over & under for airsoft. There was a cap gun toy with shells and ejectors in decent quality made back in the 80's. It was quite small though about 60% or so. But if you could find that you could probably just replicate the mechanism in a larger scale.

[Safeword]

I was wondering, the PPS metal shells looks a lot like the Madbull ones, would it work if I bought only the breech sleeves and extractor, could I use the PPS metal shells then without buying the firing pins?

[svman]

Yes but if you want to keep your inner barrels youll need to cut the breach sleeves down and move your inner barrles back towards the shells. Putting some 22mm plastic pipeing around the black rubber bits that seal the shell to the barrel as a spacer. Its easy to do. But if you dont want to keep the inner barrles the sleeves and the extractor will work fine plus you can still use aps shells as well. 6mm Inner barrles will give you more range with the pps shells but smooth bore sleeves will give you more shell options.

[Safeword]

Good to know, thanks. Have 20+ PPS shells and only have 1 magazine for my PPS xm26 so wanted something that can use those shells

[svman]

You can by spare mags for the xm26 if you wanted more. How is the xm26 any way? Good reliability? It could be a good base for a shell ejecting aa12 if you could attach a pneumatic piston with a remote line to the cocking handle and build a drum mag for it.

[Safeword]

The xm26 is great fun, a little weird at first, picking it up I thought it was plastic made but its aluminium, I only shot mine two times, working on building it a shotgun pistol thingy

[blobface]

Hey svman, you mentioned you got a real stock to fit your HS double barrel shotgun? Which model stock is that? I'm quite tempted to make a full stock for mine as well at some point! 

[Cesare]

I have got an extra buttstock from a Winchester Xpert m96 which would require some modification. My plan was to modify it so I would have a side by side long barrelled full stock scattergun.

Since I found a Hudson I didn't really need it.

 

A large part of the mechanism resides inside the stock which makes it difficult to fit. From the look of things I think something like a savage 311 stock probably would fit even better. But I am sure that I would mean a whole lot of work. Maybe you can tell us how you did it SVman? + maybe a picture?

[svman]

Well i took the lazy route it costs somewhere in the region of £500 to have a shotgun blank stock profeshonaly chisled to fit so i just choped and glued a stock to the pistol grip . Step 1 aquire someones battered old pigeon gun stock from local gun shop for a fiver. These only end up in the bin when someone gets a new stock so if you ask nicly it may even be free. Step 2 offer the new stock up to the exsisting wooden handel and use a permanent marker to decide where you want to cut and join. Step 3 use a very fine toothed hacksaw to cut the unwanted section off both stock and handel. Step 4 put sand paper on a flat hard surface and sand both joining surfaces until compleatly flat and polished smooth. Step 5 offer the two pieces up to each other again and using your permanant marker and a straight edge draw two lines on the outside of the wood to mark the angle you want to drill into both sections for dowles. Step 6 drill two holes in each piece of wood the same diameter as your chosen dowel using your external pen lines as an angle guide. This way your dowle holes will marry up. Step 7 cut dowel to apropriate lengths, fill all 4 holes with wood glue and make a ring off wood glue around the perimeter of the two sealing surfaces of wood. Fill the area inside the outer ring with a genrouse amount of super glue. Inseret your two pieces of wooden dowel into the holes and push the two halfs together. It helps to leave it in a clamp whilst the glue sets. Step 8 sand the *suitcase* out of the exterior. If youve bought a cheap battered stock like i did it will be covered in chips, holes and scratches. Sand sand sand until your happy with the look and do the forgrip too. Step 9 varnish with a deep coloured wood stain. This will cover the fact that you have just glued two different wood types together and make the whole thing look like a swanky piece of mahogony. Step 10 screw on shock absorbing butt pad of your choice. I used one off an old acm m500 stock but any will do. Step 11 wax and polish. Your done

[svman]

Pic

[svman]

And another. To be honest it dosent look great these days after years of being filded. It might be time for another sand varnish and polish.

[svman]

Pic

[blobface]

Great thanks for the tips, I'll try to acquire a spare set of grip and long barrel for the gun, once I get those I'll see where I can get a cheap stock to modify. 

[svman]

Have you managed to have a sniff round the hudson yet or is it still in transit? Quiet excited about sprung loaded hammers if the project turns out to be viable.

[swatti]

Oh god, make it stop... I actually want a shell ejector shotty now.

[blobface]

I'm in communication with Cesare, so it's happening, might create a new thread when I have more on it.

[svman]

Sweet. Looking forward to the potential results. If anyone ever needs some advise for servicing madbull or pps clone shells drop me a pm.

[blobface]

Parts arrived, so it begins! (However slowly it might be) 

[svman]

Nice. Please keep us posted Mr Face.

[svman]

Any news on your hammer project?

[blobface]

Yeah, I'd printed a hammer that reaches the firing pin of the APS shell, however due to the spring strength it wasn't able to make the round go off, I bought a set of new springs which was incorrect, so currently in trial and error mode to try to find the right spring that would give the right power.