Semi auto shotguns

[Somerset_Sam]

Some of you probably know me and my shotguns from other groups, for those of you that don't: I make semi-automatic Tri-shot shotguns using Cyma and Tokyo Marui spring tri-shots.

 

[Lyndication]

How do you make a semi auto springer shotgun?

 

[Somerset_Sam]

How do you make a semi auto springer shotgun?

Click to shrink...

Machined HPA engine of my own design installed

 

[Lyndication]

Machined HPA engine of my own design installed

Click to shrink...

Oh cool like a Daytona system?

I'm really curious cos it's a niche that has so few other options. There's like, the Saiga and that's it. A semi auto M1014 or Spas-12 would be sick.

 

[Somerset_Sam]

Oh cool like a Daytona system?

I'm really curious cos it's a niche that has so few other options. There's like, the Saiga and that's it. A semi auto M1014 or Spas-12 would be sick.

Click to shrink...

I'll be honest I don't know what the Daytona system is.

I have done dozens of conversions now.
Done both Cyma M1014 (technically a M3 tactical) and SPAS-12 conversions for people.
Here is a video of a M1014

View: https://youtube.com/shorts/SvkQX-oRzpk?si=pU87gjoF8m2OsNg5

Here is a video of a SPAS-12

View: https://youtube.com/shorts/XWnnoANJ3Ew?si=Woo3gq5c_CRHZhDT

 

[Lyndication]

Very cool.

Is the HPA engine available for purchase to install in other guns? Is it a bespoke design for each model of gun, or a universal drop-in?

 

[Somerset_Sam]

Very cool.

Is the HPA engine available for purchase to install in other guns? Is it a bespoke design for each model of gun, or a universal drop-in?

Click to shrink...

The same engine is used across CYMA and TM tri-shots but it's not a drop-in because the internal plastic frames of the shotguns need precise cuts and milling out to make enough room and hold the engine in the right position. They also have changes to how the stocks get mounted due to hose routing.
The engine only works in tri-shots, I think people have failed before when trying to use the AEG style HPA engines in tri-shots because it doesn't have the specificity to the Tri-shot feeding system, which is very sensitive to instability and has a much longer stroke than AEGs.

More information can be found on www.operationairsoft.co.uk

 

[Lyndication]

Bookmarked that for later on, it's a very interesting proposition.

 

[Punisher3990]

Here is a video of a SPAS-12

View: https://youtube.com/shorts/XWnnoANJ3Ew?si=Woo3gq5c_CRHZhDT

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Damn it, now I need to buy a SPAS12 lol

 

[Cannonfodder]

FFS my bank account hates me enough already. Guess I'd better start selling organs again

 

[Somerset_Sam]

FFS my bank account hates me enough already. Guess I'd better start selling organs again

Click to shrink...

I can say that the business is accepting 40mm grenade launchers as currency (currently require all barreled types except M203) this is for a project that's about as cool as semi-auto shotguns are

 

[Cannonfodder]

I never said they were my organs