.556 is literally half the price per round online opposed to buying them in the store . Cheapest I have ever paid for 556 was 30 cents a round at a gun show.PhiloBeddo » 18 Dec 2024, 5:21 pm » wrote: ↑ The best way to buy ammo is online. You can shop the whole USA for the best deals and delivered right to your door. Unless you live in a commie state.