RCBS AR Series Die Sets feature a Small Base Sizer Die designed for semi-automatic firearms. The Small Base Sizer guarantees the cartridge will rechamber in AR-platform firearms. The AR Series Die Set also feature a rifle Taper Crimp Seat Die. Features a Small Base Size Die to insure feeding in semi-automatic firearms Taper Crimp Seat Die crimps bullets so they will not move during recoil Unique 7-degree crimp angle designed for taper crimps in autoloading rifles Comes in a Black Die Box All RCBS dies are machined to exacting tolerances, hardened and finished to the highest standards in the industry | RCBS Small Base Taper Crimp Die Set - AR Series .300 AAC Blackout
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