Black Hills is an ammunition company based out of South Dakota. Jeff Hoffman, a sworn police officer since 1979, founded this company knowing what was needed in the world of ammunition. Every single round of ammunition is hand inspected before leaving their factory. They make quality ammo that is trusted by many. The United States Military purchases match 5.56mm ammunition from Black Hills. Law enforcement agencies rely on Black Hills ammunition, as well. This company is so trusted and reliable that companies who manufacture firearms use Black Hills ammo for development testing. They sell to Armalite, Beretta, Browning, Cimarron, Colt’s Manufacturing, Colt’s Defense, DPMS, Dakota Arms, Detonics, FN, Freedom Arms, GA Precision, H&R 1871, Heckler and Koch, Iron Brigade Armory, Kimber, Landtee, Lewis Machine, Marlin, McMillan Brothers, Mossberg, Patriot Arms, Robar, Rock River Arms, Savage Arms, Sig Sauer, Smith & Wesson, Springfield Armory, Sturm Ruger, Texas Brigade Armory, and Wilson Combat. Black Hills is not the most inexpensive ammunition out there, but it is one of the most reliable and you are getting more “bang for your buck” with these rounds. Black Hills is also known for their excellent customer service, which is hard to find these days. You can always feel good about supporting this company who manufactures quality products that are made in the USA.