ront4130I have a 12.5 556 upper for sale it’s using a triarc track 2.0 barrel with a pinned low pro triarc gas block. It’s on a mil spec cero forge m4 upper reciever and has a Midwest industries 11.5 handgaurd. It comes with a complete BCM bolt carrier group and a griffin snatch 2 charging handle and has a forward control designs 6315KM-S which is their short flash hider with keymo suppressor mount for the muzzle device. I’ve owned the upper for some time but have only ran ruffly 200 rounds through it. I upgraded and it’s just been sitting in the safe since. I never ran a can on it as I went with the plan b system. So the 200ish rounds it’s fired have been unsuppressed. It’s a solid upper and the track 2.0 barrel is gassed well and shoots real smooth. Asking 550$ i accept PayPal or Venmo and am happy to answer any question
