RCBS AR Series Die Sets are a must for progressive reloaders. They feature a Small Base Sizer Die designed for semi-automatic firearms, and a Taper Crimp Seater Die. The Small Base Sizer guarantees the cartridge will rechamber in AR-platform weapons.

Specifications and Features:
RCBS AR Series Rifle 2-Die Set
.224 Valkyrie
Small Base Sizer Die
Taper Crimp Seater Die
Recommend for AR style firearms
Standard 7/8"-14 thread pitch