Sweet shioter - OpticsPlanet Exclusive Moriarti AR-9 10.5in 9mm Luger Upper Receiver Assembly

Placing this on top of a Palmetto lower with a KAK buffer, a Trybe BCG, and an Endo-mag, I have had zero fail to fire or fail to feed issues. The accuracy is more than I could have ever expected. I use the Sig red-dot sold here for around $120. I can shoot the bullseye out of my targets time after time. I also tried the Stern Mag adapter for Glock mags. Still shot great but i did have a 30rd mag fall out while shooting.
Bottom line is that this uoper is awesome in my opinion. I would purchase another one in a heartbeat.