Premium 6mm ARC Brass – New & Once-Fired Cases for Precision Reloading

Reload precision 6mm ARC rounds with confidence using Diamond K Brass. We offer both new and once-fired 6mm ARC brass, hand-sorted, tumble-polished, and inspected to ensure uniform dimensions and excellent reloadability. Ideal for long-range shooters, precision competitors, and hunters who demand match-grade consistency.

Why Choose Diamond K 6mm ARC Brass

• Match-Grade Consistency: Uniform case geometry and internal volume help deliver predictable pressures and repeatable velocities for tighter groups.

• Certified Quality: Each lot is inspected for splits, dents, and deformities before packaging.

• New & Once-Fired Options: Save with once-fired brass or select new cases for the tightest tolerances and match-grade performance.

• Ready to Process: Once-fired cases are cleaned and tumble-polished — ready for depriming, resizing, and loading.

• Bulk Options: Available in convenient pack sizes to suit hobbyists and commercial reloaders. Contact us for large-volume quotes or headstamp sorting.

Benefits for Precision Shooters

The 6mm ARC was designed for efficient long-range performance from modern AR platforms. Using high-quality brass—especially from trusted vendors like Diamond K—lets you tune loads for optimal ballistic consistency, reduced spread, and improved accuracy at distance.

Fast Shipping & Reliable Service

Most orders ship within 24–48 hours with secure packaging and tracking. Diamond K Brass includes responsive customer service and can accommodate custom orders, primed options, or processed (ready-to-load) requests for bulk buyers.

Order Your 6mm ARC Brass Today

Whether you’re building match ammo or stockpiling brass for seasonal shooting, Diamond K Brass supplies premium 6mm ARC cases you can trust. Browse our selection and place your order now.