RCBS Small Base AR Series Dies / Small Base Die Set with Taper Crimp Die .223 Rem. (5.56mm)

RCBS Small Base AR Series Dies / Small Base Die Set with Taper Crimp Die .223 Rem. (5.56mm) The AR die series is specifically designed for self-loading firearms. The set includes a small-base resizing die and a taper crimp die. This calibrates the cases tighter than usual for improved functionality. The taper crimp ensures a secure bullet seat even with bullets that do not have a crimp groove. Dents at the case mouth, caused by different case lengths, as can occur with roll crimping, are also avoided.