This is a HK 53 pistol hand built by top HK gunsmith/builder Jayson Cotter of IGF (Investment Grade Firearms). Google his name or IGF to see the accolades that he has on his builds, best HK smith in the country! This gun is very rare and sought after, in fact it may be the last one you'll see before they ban them!!! It took me over a year to find this one, and that was before the buying frenzy of 2013 occurred. The recoil is very manageable and in .223 gives much more stopping power than it's 9mm little brother, the mp5. This gun has an American made receiver hand rolled and welded up by Jayson, but otherwise is all factory German HK parts including a full auto bolt, full auto lower, and genuine German HK flash hider installed. It is ready to rock and roll in full auto, just get your NFA legal registered sear or trigger pack and light it up! ( NFA rules apply) Or for $200 you can get the tax stamp and SBR it to make one badass short barrel SWAT rifle for home defense. It has been test fired by Jayson with about 50 rounds to ensure proper function, and I've ran a mag thru it, but has otherwise sat in my safe since new. You will not find a cleaner IGF HK anywhere unless you spend another grand plus and wait almost a year for Jayson to build you one, and that's if you could even find a 53 receiver to build one on before the impending ban! I would never sell this gun, but I'm really wanting to get a Barrett .50 bmg and need the $ to fund that project. It comes with one 40 rd factory HK german date stamped mag, which are very rare and are going for about $100 right now. Willing to accept credit card payments thru discreet paypal transaction with buyer to pay additional 4%. Shipping is $40 if I can ship it direct to your FFL or $60 if it has to be shipped by my FFL to cover his fee. I am NOT making any profit on this sale, simply trying to recoup my $ out of it to buy my Barrett. I can provide additional pics upon request.