Easton Sonic 6.0 Match Grade – Kauffman Custom Build

High Velocity Meets Match-Grade Precision.

For bowhunters who demand flat trajectory, surgical broadhead flight, and total control over their finished arrow weight, the Easton Sonic 6.0 Match Grade is built to deliver. USA-manufactured using Easton’s seamless 100% ACU-CARBON™ process, this 6mm reduced-diameter shaft offers an elite ±.001" straightness spec. Its lightweight GPI profile gives you maximum freedom to configure your setup—whether you want a blistering lightweight speed rig for western basins or a hard-hitting, high-FOC heavy buildup with brass front components.

At Kauffman Custom Archery, we take Easton's flagship 6mm carbon shaft and apply our meticulous studio bench workflow, turning match-grade raw carbon into a perfectly spine-indexed, spin-verified hunting setup.

The Kauffman Custom Studio Difference

High-velocity lightweight shafts require exact bench tolerances—at longer distances, even tiny fletching or face alignment errors compound. We eliminate these variables through dedicated prep:

• Static Spine Indexing & Marking: We statically index every shaft on our precision spine tester to identify its principal stiff plane, ensuring uniform shaft-to-shaft flex upon release.

• Dual-End Diamond Squaring: Both point and nock ends are trimmed and precision-squared using diamond wheels, guaranteeing a 90-degree flush seat for inserts, broadheads, and nocks.

• Custom Hand Fletching: Shafts are thoroughly degreased, wrapped with heavy-duty Onestringer custom wraps, and hand-fletched with high-profile vanes (Q2i Rapt-X or AAE Max Stealth) for maximum broadhead control.

• Grain & Balance Sorting: Your entire set is weight-sorted across the pack to guarantee tight grain tolerances and repeatable point-of-impact.

Technical Specifications

• Shaft Inside Diameter: .231" / .232" (6mm Reduced Diameter)

• Carbon Construction: 100% Seamless USA-Made ACU-CARBON™

• Straightness Tolerance: Match Grade ±.001"

• Insert System: Easton 6mm ST RPS Inserts (18 gr) or 6mm HP Inserts (23 gr); Optional Brass Break-Off Inserts (50–75 gr)

• Nocks: Pre-installed 6mm H-Nocks

• Spine Options: 250 (9.5 gpi), 300 (8.8 gpi), 340 (7.8 gpi), 400 (7.2 gpi), 500 (6.7 gpi), 600 (5.8 gpi)

Custom Build Options (Configured Above)

1. Select Your Spine: Matched precisely to your draw weight, draw length, and tip weight setup.

2. Precision Carbon Length: Clean-cut to your exact carbon-to-carbon specifications.

3. Front-End Weight Setup: Standard 18gr/23gr Inserts or Heavy Brass Inserts (50–75gr) for high-FOC builds.

4. Custom Fletch & Wrap: Select wrap pattern, vane style, helical offset, and cock-vane accent color.

Want to test flight this shaft on your own setup before committing to a full dozen?

Order a single, bench-prepped sample arrow through our Test Flight Program. We will spine-index, dual-end square, wrap, and hand-fletch a single shaft to your exact specs and ship it straight to your door. Shoot it on your home range, test your broadhead flight, and use the included Store Credit Voucher directly toward your full dozen custom order!