Black Hills TMK ammo pairs a proven 5.56x45mm case with one of the most accurate target bullets ever put into a factory load, and this D556N19 box holds 50 rounds of it. The projectile is a 77 grain Tipped Match King, a polymer tipped design that improves on the classic match hollow point profile. It is a load for shooters who spend real time behind the rifle.
What Black Hills TMK Ammo Brings to an AR-15
The Tipped Match King takes an already excellent match bullet and adds a polymer tip. The tip sharpens the nose profile, which helps the bullet hold velocity downrange, and it also protects the nose from getting dinged inside a magazine. The result is a bullet that flies flatter and groups more consistently at distance.
This is the load for the shooter who runs a service rifle course, a carbine class, or a long practice session where every round is being scored. 5.56 is the standard AR-15 chambering, so rifles and components are everywhere and practice stays affordable, and a fifty round box gives you enough volume to actually work through a drill.
Features Worth Paying For
- 77 grain Tipped Match King bullet with a polymer tip for a cleaner nose profile
- Fifty rounds per box, double the count of a typical match ammunition package
- Brass cases you can collect and reload if that is part of your routine
- Clean ignition and consistent velocities that build trust in your zero
- Manufacturer model D556N19 printed for easy reordering of the identical load
- Feeds smoothly from standard AR-15 magazines with no profile related hang ups
Reading the Specifications
The chambering is 5.56x45mm and the bullet weight is 77 grains, which sits at the heavy end of what most AR-15 barrels are built to stabilize. Heavier bullets in this caliber carry more energy downrange and resist wind drift better than the lighter 55 grain training loads most shooters start out on.
Cases are brass. That means clean extraction, reliable resizing, and a component worth picking up off the ground if you handload. The model number D556N19 is printed for a reason, so keep a box flap if you ever want to order the same thing again. Shooters who track components tend to order Black Hills TMK ammo by that number rather than by description.
Fifty rounds is the quantity that separates this from a typical match box. You get enough ammunition to shoot a full string, check your data, and shoot it again without opening a second package or mixing lots.
Twist Rate, Storage and Practical Use
A 77 grain bullet needs a fast enough twist to stabilize. Look for a 1:7 or 1:8 barrel, which is what nearly every modern AR-15 ships with today. Slower twist barrels can sometimes work but should be tested on paper before you build a course of fire around them.
Keep the box cool, dry and sealed. Ammunition is not fragile, but humidity and heat cycling are the two things that shorten its useful life, so a plastic ammo can with a desiccant pack in a closet beats an open shelf in a hot garage every time.
If you want a cheaper round for volume drills alongside this one, our full ammunition catalog carries training loads in the same caliber so you can practice on budget ammo and confirm your zero on match ammo.
Bottom Line on Black Hills TMK Ammo
This is the answer when you want match accuracy without babying your rifle. It loads, feeds and extracts like ordinary ammunition and then prints groups that are anything but ordinary, which is a rare combination in a factory cartridge. Plenty of shooters buy one box of Black Hills TMK ammo to test and then never go back to their old load.
Grab a box, shoot it across a few sessions, and let your data book tell the story. Black Hills has a long standing reputation with serious rifle shooters, and this load is a large part of the reason. This ammunition ships straight to your door wherever state and local law allows.





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