Sun project xm fully functional collector’s piece with hpa system and m-16a4 with collapsing front sight and zombie killer suppressor, m-16 is missing the trigger valve assembly but can be readily swapped from one to the other. I use the XM for Vietnam games and the ‘16 for more modern stuff. Regulated hpa or option to use regulated Co2 with 90g cartridges. Awesome setup, the only GBB system that uses regular aeg magazines (4 included) 800 is firm, as typically one single sun project can sell for that, and the XM 177 e2 is a rare bird... imagine all the kick of gbb with adjustable pressure on the fly uses cheap AEG magazines and zero batteries! Such a great great system, that is absolutely bulletproof and super simple to maintain. Shipping is available and you will pay for it and insurance. - offers for stoner Vietnam model, Tanaka trench gun considered. I am in 12186