Black Hills 5.56x45mm Ammo

Black Hills 5.56 ammo is the premium, match-grade name in the AR-15 world — the maker behind the legendary Mk 262 Mod 1, the 77-grain open-tip match load developed for military designated-marksman use and prized for its accuracy and downrange performance. Black Hills built its reputation supplying precision ammunition to the U.S. military and demanding shooters, and its 5.56 lineup reflects that pedigree, from the famed Mk 262 to lighter hunting and defensive loads. If you want top-tier 5.56 accuracy, this is the benchmark. This page covers the lineup. It’s part of our full 5.56 ammo selection.

The Mk 262 Legacy

Black Hills is best known for the Mk 262 Mod 1 — a 77-grain open-tip match (OTM) 5.56 load developed for military special operations who needed better accuracy and terminal performance from the platform than standard ball provided. Its heavy-for-caliber bullet excels from longer barrels and at extended range, and it became the gold standard for precision 5.56. Black Hills offers this and similar 69- and 77-grain match loads to civilians, giving precision-minded AR-15 shooters access to genuine designated-marksman-grade ammunition. Our Black Hills 5.56 guide covers the lineup.

The Black Hills 5.56 Range

Beyond the Mk 262-style 77-grain OTM, Black Hills loads lighter options — 50- and 62-grain TSX all-copper hunting and barrier loads, 60-grain soft points, and 55-grain rounds — covering precision, hunting, and defense. Black Hills offers both new (blue box) and quality remanufactured (red box) ammunition, the latter giving a value path to the brand’s quality. For high-volume training, value brands like Hornady Frontier make more sense; for accuracy and performance, Black Hills leads. It runs best in AR-15 rifles with appropriate barrel twist (1:8 or 1:7) to stabilize heavy bullets. Standards follow SAAMI specifications.

Buying Black Hills 5.56

For 77-grain match loads, confirm your barrel twist stabilizes heavy bullets (1:8 or faster). Federal law sets the minimum age for rifle ammunition at 18; some states and cities add restrictions, so per ATF guidance, confirm federal rules and review our ammunition shipping rules and state restrictions before ordering.

Black Hills 5.56 Ammo — Frequently Asked Questions

Is Black Hills 5.56 ammo good?

Yes — Black Hills is widely regarded as a top premium 5.56 manufacturer, supplying precision ammunition to the U.S. military and demanding civilian shooters. Its match loads, especially the 77-grain Mk 262-style ammunition, are known for excellent accuracy and performance. For precision and quality, Black Hills is one of the most respected names in 5.56, well worth its premium for accuracy-focused shooters.

What is Mk 262 ammo?

Mk 262 is a 77-grain open-tip match 5.56 load developed for military special operations, designed for superior accuracy and terminal performance from the AR platform compared to standard ball. Commercially associated with Black Hills, it became the benchmark precision 5.56 round. Its heavy bullet performs best from longer barrels and faster twists, and it’s a top choice for designated-marksman and precision AR use.

What barrel twist do I need for 77-grain 5.56?

Heavy 77-grain bullets like the Mk 262 require a fast barrel twist — 1:8 or 1:7 — to stabilize properly. A slower 1:9 twist may not stabilize them well, opening up groups. Most modern AR-15s come with 1:8 or 1:7 twists suited to heavy match bullets. Check your barrel’s twist rate before buying 77-grain loads to ensure accuracy.

What is the difference between Black Hills blue box and red box?

Black Hills blue-box ammunition is new-production, while red-box is quality remanufactured ammunition using once-fired brass. Both meet Black Hills’ standards, with red box offering a value path to the brand’s quality. New blue-box is preferred for critical use and maximum consistency; red-box remanufactured is an economical option for practice with Black Hills quality.

Can you buy Black Hills 5.56 ammo online?

Yes. In most U.S. states you can buy Black Hills 5.56 online and have it shipped to your door, including Mk 262-style 77-grain match loads. The minimum age for rifle ammunition is 18, and some states and municipalities add restrictions or shipping limits, so confirm your state and local laws before ordering.