I have an AR in 5.56 with open sights at present. Gun was gifted to me with scope but I pirated that for a bolt action long ago. Having been on vacation during the great ammo rush of 2020, I now sit on low supply of pistol ammo and good supply of 5.56. What is a good option for close range optics for this rifle? It has a pretty short barrel so not looking for a long ranger. I’m trying not to go full on whackadoo, just prepared. Red dot or fixed power? Any affordable options under $100? Seeing a food shortage yesterday shook me up a little. Thank god for a freezer full of deer and goose. Luckily I can sight in behind my house.