The Lee Micrometer Full-Length Die Set (Lee part no. 92374) is chambered for 6mm ARC and pairs a Full-Length Sizing Die with a Micrometer Bullet Seating Die, the same two-die configuration Lee uses across its Micrometer die set line for other calibers. Full-length sizing brings brass back to SAAMI-spec dimensions, which matters for a gas-gun cartridge like 6mm ARC where reliable feeding depends on consistently sized cases, while the micrometer seater lets you dial seating depth in thousandths of an inch instead of guessing by feel. For 6mm ARC shooters loading for an AR-pattern rifle, this pairing covers the two most important steps in the reloading process in one set.

Key Specifications

• Chambered for 6mm ARC, matching the die set to this cartridge.
• Includes a Full-Length Sizing Die for resizing brass to SAAMI-spec dimensions.
• Includes a Micrometer Bullet Seating Die for precise, repeatable seating depth adjustments.

Frequently Asked Questions

What two dies are included in this set? A Full-Length Sizing Die and a Micrometer Bullet Seating Die, matching Lee’s standard two-die configuration.

Why full-length size for an AR-pattern rifle? Full-length sizing brings brass back to SAAMI-spec dimensions, which supports reliable feeding and chambering in gas guns.

Buy the Lee Micrometer FL Die Set 6mm ARC

Get a precise two-die setup built for 6mm ARC. Order it from Lee‘s reloading dies lineup, and our Lubbock, Texas team can help you find a matching shell holder.