This was the newest version when I bought it brand new about 6 months ago..I've shot probably 70-80 rounds through it and it has functioned flawlessly, not one problem or concern at all. I'm trading it just because I want a different toy. I still have the box and papers that came with it new. The lifetime warranty card is on file with Professional Ordnance so the lifetime warranty is active. I have installed a tactical bolt lock back latch ,a Badger Ordnance tactical charging handle latch , a Hogue AR-15 grip. It also comes with the Pro. Ord. pistol optics mounting base accessory to be able to attach any type of optic. The pistol comes from the factory with a muzzle brake that is attached by a removeable threaded adapter, I purchased a additional threaded adapter and a different type brake to increase the operating options. Comes with a brand new Assault Systems SMG carrying case,this is a high quality case, the case is made for AR-15 type pistols and it fits it great and looks great.Comes with the 10 round mag that came with the pistol and two DPMS waffle style 10 round mags. It's over a $1200.00 setup. I'm just looking for something to trade for. I don't have anything specific in mind so if you're interested make me a trade offer. My email is firstname.lastname@example.org. If it helps to put anyone at ease I am a medically retired LEO and live about 40 miles from Dallas,Tx. Thanks!