I decided to sell my cyma made full metal elite force MP5K with a p* jack engine, this thing is amazing at the factory or in tighter arenas. I is fully programable and as a smg you can use full auto at our outdoor games with a crazy rof this is a great way to vet intp HPA if you have been wanting to test the waters, it comes with the folding stock as well as the standard mp5k endcap and the optics rail and 6 mags