How we chose
IronScout doesn't sell ammo and doesn't earn affiliate commissions. Our picks are based on:
- Reliability — functions in mil-spec and commercial AR-15 platforms
- Accuracy — consistent groups from 16" carbine barrels (1:7, 1:8 twist)
- Terminal performance — appropriate for the intended use case
- Availability — in stock at multiple retailers
- Price — competitive within category
Choosing the best ammo for AR-15 rifles depends entirely on what you're doing with it — plinking at 25 yards and precision shooting at 600 yards require very different loads. This guide covers range training, home defense, and precision use cases with specific product picks for each.
Most AR-15s are chambered in 5.56 NATO or .223 Wylde. If your rifle is chambered for 5.56 NATO or .223 Wylde, you can safely shoot both 5.56 and .223 ammunition. If chambered only for .223 Remington, stick to .223. See 5.56 vs .223 for the full explanation.
New to the AR-15? Start with M193 (55gr FMJ) for range training — it's the cheapest, most widely available option and runs in everything. For home defense, skip the military ball ammo and get a purpose-built defensive load like Hornady V-MAX or Speer Gold Dot. For the full ballistic breakdown, see our 5.56 ballistics chart.
Best range ammo for AR-15
Range priorities: cheap, reliable, accurate enough for zero confirmation and drills. Most AR-15 range shooting is at 25–100 yards.
Top picks
Federal XM193 55gr FMJ — The standard. M193-spec (3,240 fps from a 20" barrel, ~3,050 fps from a 16" carbine) at bulk-friendly prices. Lake City production keeps supply high and prices competitive. Brass-cased, boxer-primed, reloadable.
PMC X-TAC 55gr FMJ — South Korean military manufacturer, excellent quality control at budget prices. Often $0.02–0.03/rd cheaper than Federal XM193 with comparable accuracy. One of the best values in 5.56 ammunition.
Wolf Gold 55gr FMJ — Despite the "Wolf" branding, this is brass-cased ammunition made in Taiwan. Not steel-cased like Wolf's Russian-made handgun ammo. Consistently one of the cheapest brass-cased 5.56 options. Accuracy is adequate for training.
Federal XM855 62gr FMJ (SS109) — The steel-core "green tip." Slightly more expensive than M193 and slightly less accurate in most rifles. The steel penetrator serves no practical purpose for range training, but XM855 is sometimes cheaper than XM193 depending on current market conditions. Some indoor ranges ban steel-core ammunition.
Budget alternative
Tula or Wolf .223 55gr FMJ (steel case) — $0.05–0.10/rd cheaper than brass-cased. The AR-15 runs steel-cased ammo reliably, though extraction is slightly rougher and accuracy is typically 1–2 MOA worse than brass-cased. Cannot be reloaded. Some ranges ban it.
Twist rate note
Most modern AR-15s have a 1:7 or 1:8 twist barrel. Both stabilize 55gr–77gr bullets well. Older rifles with 1:12 twist (M16A1-era spec) won't stabilize bullets heavier than 62gr. If you have a 1:12 twist, stick with 55gr ammunition.
Best home defense ammo for AR-15
The AR-15 is an increasingly popular home defense platform. Ammunition selection matters more here than for any other use case because of the over-penetration question.
Top picks
Hornady 55gr V-MAX — Polymer-tipped varmint bullet designed to fragment on impact. In gel testing, V-MAX fragments within 6–10" and rarely exits. Through interior drywall, fragmentation means less risk of a lethal projectile continuing through multiple rooms compared to handgun FMJ or even 9mm JHP. One of the best over-penetration profiles available.
Speer Gold Dot 62gr Soft Point — Purpose-built for law enforcement carbine use. The bonded soft point expands reliably through barriers (auto glass, drywall, plywood) while maintaining enough mass for consistent penetration. Meets FBI barrier protocols. More controlled expansion than V-MAX — it doesn't fragment but mushrooms to ~0.50".
Federal Fusion 62gr Soft Point — Bonded hunting bullet adapted for defensive use. Similar terminal performance to Gold Dot but often slightly cheaper. Excellent through-barrier performance.
Hornady TAP 75gr BTHP — Heavy-for-caliber open tip match bullet that fragments predictably in soft tissue. The 75gr weight from a 1:7 twist barrel offers excellent accuracy. Less fragmentation than V-MAX, more controlled energy transfer.
The M193 argument
Some instructors recommend plain M193 (55gr FMJ) for home defense, arguing that at close range (under 50 yards) from a 16" barrel, M193 achieves enough velocity (~3,000 fps) to fragment and tumble on impact. This is true in gel testing — M193 consistently fragments above 2,700 fps. The counterargument is that fragmentation depends heavily on impact velocity, and any round that doesn't fragment (ricochets, barrier shots, longer hallway distances) will over-penetrate. Purpose-built defensive loads are more predictable.
What NOT to use
M855/SS109 green tip for home defense. The steel penetrator is designed to punch through barriers — the opposite of what you want inside a home. M855 tends to pencil through soft tissue without fragmenting or expanding, creating a narrow wound channel with maximum over-penetration risk.
Best precision ammo for AR-15
For accuracy at 100–600 yards — whether for competition, load development, or long-range practice.
Top picks
Federal Gold Medal Match 77gr SMK (Sierra MatchKing) — The precision AR-15 standard. The 77gr Sierra MatchKing has been the go-to match bullet since the Mk262 military contract. Requires 1:8 or faster twist. Typical accuracy: 0.5–1.0 MOA from a quality barrel.
Hornady 73gr ELD-M Superformance — Hornady's ELD-M (Extremely Low Drag Match) bullet with a heat-resistant polymer tip for consistent BC at long range. The Superformance propellant achieves 100–150 fps more velocity than standard loads without exceeding SAAMI pressure. Requires 1:8 or faster twist.
Black Hills 77gr TMK (Sierra Tipped MatchKing) — Black Hills is the original Mk262 contract manufacturer. The TMK adds a polymer tip to the MatchKing for slightly better BC and more consistent terminal performance. Premium priced but premium quality.
Hornady 75gr BTHP Match — Slightly less expensive than the 77gr options with very similar accuracy. A good balance of precision and cost for regular practice at distance.
Budget precision
IMI Razor Core 77gr OTM — Israeli military manufacturer, often significantly cheaper than Federal GMM or Black Hills. Accuracy is competitive with premium match loads. Availability varies.
Ammunition storage for AR-15
If you're stocking range ammo in bulk:
- Store in original packaging or sealed ammo cans with desiccant
- Temperature extremes don't damage modern ammunition but cause velocity variation — store in climate-controlled space when possible
- Steel ammo cans with rubber gaskets protect against moisture
- Brass-cased stores indefinitely when kept dry — properly stored military surplus from the 1960s still fires reliably
Related articles
- 5.56 ballistics chart — M193, M855, and 77gr OTM data tables
- 5.56 NATO vs .223 Remington — Chamber compatibility explained
- 5.56 ammo types explained — M193, M855, OTM, and more
- 7.62x39 vs 5.56 NATO — AK vs AR caliber comparison
- .300 Blackout vs 5.56 for home defense — AR-15 caliber comparison
- .300 Blackout ballistics — Supersonic and subsonic data
- Best 5.56 for home defense — Focused home defense picks
- FMJ vs hollow point — Bullet type basics
Related caliber pages
- 5.56 NATO ammo prices — Current pricing across all retailers
- 5.56 FMJ — Range ammo options and pricing
- .223 Remington ammo prices — Current pricing across all retailers
Search 5.56 ammo → | Search .223 ammo →
Sources
- Federal Premium XM193 Product Specifications — M193 velocity and specifications
- Hornady V-MAX Product Page — Terminal performance design details
- Speer Gold Dot Rifle Product Page — LE carbine load specifications
- DocGKR / M4Carbine.net Terminal Ballistics — M193 fragmentation data and barrier testing
- SAAMI Cartridge Specifications — 5.56 NATO chamber pressure standards