Do not buy, you have been warned!!! - Matador Arms Mat9 9mm Luger 7.825inch Upper Receiver

Terrible uppers, broken firing pin, grade -1 Titanium. FTF, FTC, FTE, you name it this POS has done it. BOTH THE MONTIGO AND THE MAT 9 look amazing, but they are such junk.... Colt adapter, built 4 extractors.... Why? Good Question, Nothing works, Bought a MATADOR ARMS MAGX P320 adapter, lol didn't even accept the P320 Magazines, for some dumb reason it accepts my P226 Mk25 and Legion Magazines???? Why can't people just tell it like it is. I'm telling you this upper is garbage. Buy a Centry Arms MP5, save yourself the 1400 i have into this build. I am a 17th Airbourne Corps, Combat Vetran, i have shot everything from M777s to MK25s to M102s.... This thing is absolutely a huge waste of time.