Your standard issue big gun, well, not really. While the China Lake launcher has been around since the Vietnam war, it's kept a relatively low profile until recently when video games started featuring it. I'm making an airsoft replica of said gun chambering 40mm moscart grenades that use compressed gas as a propellant. Will be made mostly of PVC (the blue stuff), hardwood and a few metal bits where needed. There are literally NO pictures of the real weapon's internals online but I had an inclination that it works similarly to your ol' grandpas shotgun. So I done worked up the schematic scaled from half a dozen photos and two videos but changed the firing mechanism from a hammer-fired one to a push button type so the fuzz don't come knocking at my door claiming my replica is capable of discharging 40mm HE rounds. As if I even have the cash to spend for even one of those (they're about $800 A POP!). This is a work in progress and expect it to be slow moving because it's a personal one as well. Though I will be making sure to take some time off every week to work on it so updates will be regular.