Army here, just had back surgery after Iraq and am waiting for recovery and discharge. Are you putting the ACOG on and AR-15? I wouldn't trust a look-alike brand. If you look on EBay you'll find hundred's of look-alike Leupold Mark IV scopes, they're all garbage. When I was in college and I wanted something like that, I went to the nearest blood bank (go really early to get in line) an sold blood plasma, about $20 a pop (maybe more, bonus for your 1st time), a couple times a week adds up to $100+ a month. Save up to get a real ACOG.