“Good short barreled upper in 300 BLK. Shot about 300 rounds of various brands and weights through it to test it out. Worked well with everything I tried. I like the S uppers due to the reduced weight. Like everything I buy from Aero, good quality.”
“Was looking all over for a 300 BLK upper. Most of the sites said "in-stock" only to find out they were backordered by months. Arm or Ally were on the money. Great upper, great service too.”
