The Lee Factory Crimp Die for 6mm ARC (Lee part no. 91664) is a dedicated crimping die that applies a uniform, consistent crimp to finished rounds after bullet seating. Lee built this as a Factory Crimp Only die, meaning it doesn’t size or seat; it’s a final station that locks in case-mouth tension for more consistent bullet pull and reliable chambering, a step many 6mm ARC handloaders add to their die sequence for better round-to-round consistency. The die measures 1.60 x 1.65 x 4.90 inches overall and is machined from steel rather than carbide. It’s an easy, low-cost addition to an existing 6mm ARC die set for handloaders who want tighter consistency out of every finished round.

Key Specifications

• Chambered specifically for 6mm ARC.
• Functions as a Factory Crimp Only die, applying a uniform crimp after bullet seating.
• Measures 1.60 x 1.65 x 4.90 inches overall.
• Machined from steel rather than carbide.
• Sold as a single die, not part of a multi-die set.

Frequently Asked Questions

What does a Factory Crimp Die do? It applies a uniform crimp after seating, improving case-mouth tension consistency and helping reliable chambering.

Is this die carbide? No, it’s machined from steel.

Buy the Lee Factory Crimp Die, 6mm ARC

Adding a dedicated crimp station is one of the cheapest upgrades you can make to a 6mm ARC die sequence. Order from our Lee Precision lineup in our reloading dies selection, and our Lubbock, Texas team can help you round out your die set.