Lee Precision 300 AAC Blackout 3-Die Breech Lock Set Features The Lee Precision 300 AAC Blackout 3-Die Breech Lock Set is built around full length sizing the recommended approach for reloaders working with mixed range brass of unknown chamber history. Color coded quick change bushings come factory installed on each die letting reloaders with the Breech Lock Quick Change feature on their press swap dies in seconds without re-indexing. The easy adjust dead length bullet seating die allows precise repeatable seating depth without the bullet contacting the case neck during seating which helps maintain consistent overall length round to round. The factory crimp die finishes each round with a controlled crimp which matters in .300 AAC Blackout given its common use in semi-auto AR platforms and suppressed builds. A universal shell holder powder dipper and instructions with load data are included giving reloaders a complete starting point without needing to source additional components separately. The .308 inch bullet diameter matches standard .300 AAC Blackout bullet offerings ensuring compatibility with the wide range of projectiles available for this cartridge. This breech lock bushing system is a signature Lee Precision feature that speeds up die changes for reloaders running multiple calibers through the same press. For AR platform shooters reloading .300 AAC Blackout from mixed brass this 3-Die Breech Lock Set offers a fast complete reloading solution. Lee Precision 300 AAC Blackout 3-Die Breech Lock Set Specifications Manufacturer: Lee Precision Model: 300 AAC Blackout 3-Die Breech Lock Set Caliber: .300 AAC Blackout Reloading Diameter: .308 Die Type: 3-Die Breech Lock Set Full Length Includes: Color Coded Breech Lock Bushings Full Length Sizing Die Dead Length Bullet Seating Die Factory Crimp Die Universal Shell Holder Powder Dipper Instructions Available At: GrabAGun