I cannot find any AR's available and I keep getting offered SKS's at Gun Shops. I don't know much about them except that they fire 7.62x39 ammo, which is the size AR I was interested in before they sold out EVERYWHERE in 3 days. So.....why do the shops still have the SKS? Are they not easy to operate, clean, etc.? Please give me your thoughts on the SKS as an alternative to an AR. Thanks