Ammunition can get incredibly expensive very fast(high-end loadouts use like 60k roubles on 30 bullets) so you'll want to primarily focus onselling all the expensive ammoyou find andbuy PST Gzh for pistols and Kedr, 7.62x39 PS for SKS, M855 for the ADAR, 5.45x39 PS for AKs and M8...