The firearm models H&K SL-8, OA-15, REMINGTON, CZ527, and RUGER MINI 14 are deployed to run the acceptance tests of cartridges.
The phosphate polymer coating cartridge case is bottled-shaped with non-projecting flange and made of steel.
The bullet of .223 REM (5.56×45) consists of two elements, i.e.:
copper or bimetal jacket