5.56 Ammo Price Index

Updated monthly. Latest reading: July 2026.

This index tracks the cheapest 5.56 range ammo on the market, month by month, and what makes the price move.

We pull the lowest in-stock price per round for new, brass-cased 55-grain FMJ range ammo across the major price-comparison sites, going back to 2009. That is the best deal available each month, not our price.

The reference line is the 17-year median price, meaning the median month. We use the median rather than the average because panic years like 2013 and 2021 pull an average upward and make a current price look calmer than it is.

5.56 Cost Per Round Over Time

We build this series ourselves, aggregating the lowest in-stock price per round listed each month across the major public ammunition price-comparison sites, AmmoEngine, AmmoGrab, Gun.Deals, and AmmoPricesNow among them. It prices the same kind of round throughout: new production, brass-cased ball ammo, with no steel-cased imports, no remanufactured rounds, and no specialty loads.

The series runs from 2009 through July 2026 and is refreshed monthly. Months with no reliable data are left blank rather than estimated.

The spikes on this line are demand, not costs. Here is what moved it:

• 2009. The line opens at $0.41, still elevated from the post-2008 buying wave set off by the Global Financial Crisis and President Obama's election, and eases toward a quarter a round as those scares fade.
• 2012 to 2013, the caliber the legislation was aimed at. The Sandy Hook shooter used an AR-pattern rifle, and the bans proposed afterward at the federal and state level targeted the AR itself, so buyers cleared its ammunition first. The cheapest 5.56 roughly tripled, from about $0.35 to $0.99, and was still near $0.76 deep into 2013. No other caliber's 2013 panic matched its COVID-era peak; 5.56's did.
• 2017 to 2019, the Trump Slump. With President Obama out of office, panic demand evaporated and the floor ground back to $0.24, about where it sat in the calm of 2010.
• 2020 to 2021, the big one. COVID lockdowns, the BLM riots and the defund-the-police summer, then a contested election, each wave sent buyers back for more. The cheapest 5.56 went from $0.24 in May 2020 to $0.99 in February 2021, a genuine quadrupling, followed by a two-year fade to $0.29 by early 2023.
• 2023, the war premium arrives. Hamas attacked Israel on October 7, and within weeks Lake City, the plant that feeds most of the civilian 5.56 surplus market, paused commercial sales. The floor jumped roughly a third in a month.
• 2026. The surprise U.S. airstrikes on Iran moved the line again within weeks.

■ Price rose   ■ Price fell   ■ No change

5.56 Search Interest Over Time

Search interest is the demand signal: it measures how many people are looking for 5.56, not what it costs. For most calibers the spikes are domestic, anti-2A elections and legislation.

5.56 has a second trigger: it is the American military's rifle round, so wars move it in ways handgun calibers don't. If you read it against the price line above, the chart shows both kinds of shock, and one famous scare that never became a shortage.

• December 2012 to January 2013. Sandy Hook, then President Obama's push for a new federal assault-weapons ban; the whole AR family peaked together, and 5.56 hit 90 percent of its all-time high.
• February 2015, the scare that never became a shortage. President Obama's ATF proposed reclassifying M855 "green tip" as armor-piercing, and 5.56 search interest tripled in a month while every handgun caliber sat still. The proposal was withdrawn in March; interest collapsed and prices barely moved.
• January 2021, the all-time peak, at the crest of COVID-inspired winter lockdowns, BLM-inspired civil unrest, and a contested election.
• October 2023. Hamas's October 7 attack on Israel and the Lake City pause that followed: the highest search interest since 2021, while 9mm barely stirred. Wars find this caliber specifically.
• 2026. The surprise U.S. airstrikes on Iran, the same signature again.

Factory Cost vs. Retail Price

This chart tracks what ammunition costs to make: the federal Producer Price Index for small arms ammunition (U.S. Bureau of Labor Statistics), the price manufacturers charge at the factory door, with the retail scramble stripped out. The index's one big move came in late 2007, when lead hit an all-time high and military orders for Iraq and Afghanistan ran the industry's plants at capacity, a genuine cost increase, visible because it impacted the factory's cost of goods directly.

The demand surges read the opposite way: through the 2020 to 2021 spike this index rose less than 7 percent while the cheapest retail 5.56 roughly quadrupled. That surge was a scarcity premium paid at the shelf, not a jump in the material costs required to build a round.

Demand sets the price of 5.56, not the cost to build a round.

Background Checks vs. Ammo Demand

This chart adds another piece to the puzzle: how many Americans actually bought a gun, not ammo. Every retail firearm purchase runs through an FBI background check, and the National Shooting Sports Foundation strips out the permit checks and rechecks which states run against existing license holders, leaving the closest public measure of guns actually sold, month by month, back to 2000. This is a look at the buyers of firearms, not ammunition.

That difference is what makes it worth reading against the price and search lines for ammo above: when all three climb together, new buyers are entering the market; when ammo demand surges and NICS background checks barely move, Americans who already own guns are stocking up. Background checks count how many Americans joined the ranks of gun owners; ammunition prices measure how worried the ranks already are. One gauge counts the crowd growing, the other reads its pulse.

For 5.56 the comparison is sharp, because background checks count all guns while 5.56 demand concentrates on one, the AR-15. When Washington went after the rifle itself, this caliber outran the national numbers: December 2012 set what was then the all-time record for FBI background checks at 2.24 million, and 5.56 still spiked harder than any other caliber.

When the threat was to the ammunition rather than the gun, President Obama's 2015 M855 ban attempt, 5.56 search interest tripled while background checks did not move: nobody needed a new rifle, everybody wanted ammunition for the one they had. Wars tilt the same way: after Hamas's October 7 attack, and again after the surprise U.S. airstrikes on Iran in 2026, this caliber's demand jumped far harder than national gun purchases did.

New buyers move the background-check line; nervous owners move the price line.

How much does a box of 5.56 cost right now?

The latest point on the index above is the cheapest advertised price per round this month. A standard 20-round box runs about 20 times that number and a 1,000-round case about 1,000 times it, before shipping. Typical shelf prices run higher, and match-grade or defensive loads cost several times more than the ball ammo this index tracks.

What is a good price per round for 5.56?

Judge it against the line above. A price at or below where the index has sat for most of the past year is a solid buy, and a price near the series' recent lows is worth stocking up on. When the line is climbing steeply, past spikes say it will take months to peak and longer to fade, so waiting rarely pays once a surge is underway.

Why did 5.56 spike harder than any other caliber in 2013?

Because the legislation was aimed at the rifle that fires it. The Sandy Hook shooter used an AR-pattern rifle, and the proposed federal assault-weapons ban which President Obama pushed hard for following his re-election targeted the AR platform, so buyers cleared AR ammunition specifically. Search interest and prices for 5.56 and .223 spiked far past every handgun caliber.

The same pattern repeated in miniature in 2015, when a proposed ATF ban on M855 ball sent 5.56 search interest tripling while 9mm never moved.

Is this index 5.56 NATO or .223 Remington?

The index prices 5.56 NATO-spec ball ammo, the bulk range standard. .223 Remington is its near-twin commercial cartridge and tracks the same market forces, so this page and the .223 index read like siblings. Check the barrel stamp, then buy whichever is cheaper that month.

More Ammo Price Indexes

Use This Data

Writing about ammo prices? Drop the live 5.56 cost-per-round chart onto your site. It refreshes on its own as we publish each month and links back to this index. Free to use with attribution.

<div class="infogram-embed" data-id="_/frPcanrD2dBS1rxWXyT1" data-type="interactive" data-title="5.56 Cost Per Round Over Time"></div><script src="https://e.infogram.com/js/dist/embed-loader-min.js" async></script><p>Chart: <a href="https://ammo.com/ammo-prices/556">5.56 Ammo Price Index</a> by Ammo.com</p>