Somerset_Sam
New member
- Feb 25, 2026
- 5
- 11
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Machined HPA engine of my own design installed
I'll be honest I don't know what the Daytona system is.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.
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.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?
Damn it, now I need to buy a SPAS12 lol
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 areFFS my bank account hates me enough already. Guess I'd better start selling organs again