Sure... it's legit. It's an SP-10. No big deal... not worth really any major premium. Like Dawg sez, chop off that goiter hanging from it's chin and it's halfway decent looking. Rare? Maybe . Do you consider a gun that largely didn't sell well leading to it's demise, rare? To me, it isn't going to command any special premium over a run of the mill steel, stamped MP type. At least not until Red Jacket claims to have invented them... then you might see a price spike.Anybody ever heard of this:
Special weopons SP10 MP5 UMP USC Prototype 9MM HK : Semi Auto Rifles at GunBroker.com
I looked at it and was thinking, is this legit?