Wolverine inferno gen 2 Spartan edition V2 HPA engine. Purchased in March 2021. I have only used it the once so basically brand new. Come with a Balystik high pressure regulator and a Valken 0.8L bottle. 
Also comes with braided hose and a vest mountable bottle bag. 
Engine comes in original packaging with o ring kit and buffer tube adaptor. 
Every thing is as new. 
£400 all in posted. Paid just under £500 for all of it new. 
 

**bottle picture shown as full but has been emptied prior to packaging**