Please Note: In the above picture, top right side for size comparison, Left: 6x45mm with .243″ or 6mm projectile and on Right .223″or 5.6mm projectile.
One Cartridge , not a box: 6x45mm for AR-15/M16 rifles. Produced by COR-BON, factory loaded ammunition using Lapua Match .223 cases with “LAPUA MATCH 223 Rem.” Head-Stamped and loaded with a 70 grain BlitzKing PCJHP (Plastic Covered Jacketed Hollow Point) projectile.
History of 6x45mm for AR-15/M16 Rifle cartridge: This cartridge was introduced by Black Hills Ammunition Company in 2010 for use in AR15 /M16 rifles .The cartridge is produced by taking a .223″ caliber case and necking it out to accept the larger 6mm or .243″ projectiles.It is similar to the older 6mm TCU, except it is not fire formed and may have a slightly different neck angle. The AR-15/M16 rifle can easily be converted to the 6×45mm with a simple barrel swap with few or no further modifications to the rifle.
