In 1999 the United States Naval Surface Warfare Center, Crane Indiana (NSWC-Crane) contacted Black Hills Ammunition with a request. The Navy was building a specialized M16 sniper rifle called the SPR (Later to become the MK12). It was built by NSWC armorers at Crane. NSWC-Crane, in addition to other duties, is a storage and rebuild facility for weapons. They had large quantities of M16A1 rifles sitting unused. There was a Warfighter need for a precision 5.56mm capability. The SPR program took hand-selected M16A1 lowers and mated them to accurized uppers using premium Douglas barrels, OPS Inc. suppressors and Leupold scopes. The result was a very capable, extremely accurate, 5.56mm suppressed sniper rifle which proved to be effective to far beyond normal M16 ranges. What they were lacking was a precision round that could take advantage of that rifle’s capabilities. NSWC had noted that Black Hills Ammunition had developed and supplied the Army Marksmanship Unit (USAMU) with highly accurate match ammunition using the 77 grain Sierra MatchKing projectile. That match round was to be the basis for the new combat round. Black Hills went to work on development to modify the match round into an effective combat round. The resulting new round was fielded and used with great effectiveness in the new SPR rifle. The Warfighters loved it, and in 2002 the developmental round was formally adopted and type classified as the MK262 MOD 0. Black Hills, through the years, continued to refine the round, adding a cannelure to the projectile to help prevent bullet setback during a rough feed, having a new propellant designed to optimize performance in high rate of fire/high temperature conditions and to add even more reliability under extreme combat conditions. The end result is the MK262 MOD 1 in widespread DoD use today. It is still the only purpose-built precision 5.56mm round in the US inventory. Black Hills has held the contracts for production of the MK262 round continuously and exclusively since inception.
Several years ago BHA began offering a commercial equivalent, without the MK262 marking and in commercial packaging. Now going a step further with the MK262 MOD 1-C, the “C” indicates for the commercial market. This round is the exact construction and performance of US Military Mk262 MOD 1. (Since this is not being shipped to the US Military, it does not undergo full US military acceptance procedures.) MK262 MOD 1-C is available in a military can containing 460 rounds in 20 round cartons. It is otherwise identical, and each can comes with the same lot acceptance accuracy documentation that is provided on military lots. No lot of MK262 MOD 1-C will ship unless it shoots group averages of 2”or less at 300 yards (.64 MOA maximum/10 shot groups). http://www.black-hills.com