Black Eagle Tier One 5.7 mm and Spartan: Small Diameter. Internal Insert. Big Performance.

How small can a hunting arrow get while keeping the simplicity of a conventional internal insert?

That question sits at the heart of Black Eagle’s .224-inch platform. Both Tier One™ 5.7 mm and Spartan combine a compact hunting shaft with an internal insert system—giving bowhunters a smaller-diameter option with familiar component installation.

It is a design built around what hunters want: dependable performance, straightforward assembly, and confidence in every arrow.

Why the 5.7mm Platform Matters

The 5.7mm designation refers to the shaft’s .224-inch inside diameter. Outside diameter varies with spine and wall thickness.

This platform bridges the gap between standard-diameter hunting arrows and smaller micro-diameter designs. It preserves room for a conventional insert while keeping the shaft compact.

That combination is central to Spartan’s design: a small-diameter hunting arrow built around the convenience of an internal insert.

The Internal Insert Advantage

The front of an arrow is a system. Shaft, insert, and point need to work together.

With this platform, the matching insert fits inside the shaft and provides the threaded connection for your field point or broadhead. An external half-out is unnecessary.

For hunters who prefer a conventional insert arrangement, that means straightforward point installation in a compact shaft.

The distinction matters when discussing “the smallest arrow you can put an insert in.” Smaller shafts can use specialized internal components. The advantage here is one of the smallest practical shaft platforms built around a conventional internal insert system.

Spartan: A Purpose-Built Hunting Arrow

Spartan brings together premium carbon construction, a .224-inch inside diameter, and stainless steel inserts.

Its Super Sorted™ process addresses spine, straightness, and weight, while spine indexing adds attention to shaft orientation. Available spine options let hunters select a shaft suited to their particular build.

The appeal is practical: a compact hunting arrow with a familiar insert system and careful attention to consistency. Spartan gives hunters a versatile foundation for building their setup.

Tier One 5.7mm: Taking Consistency Further

Tier One™ 5.7 mm brings Dynamic Spine Alignment™, Super Sorted™ precision, and a nanotube coating to the .224-inch platform.

During alignment, each shaft is loaded and rotated to establish its orientation. Factory-fletched arrows are assembled using that measured reference.

Tier One also features .001-inch straightness and weight matching of ±1 grain per dozen. Its nanotube coating is designed to improve surface characteristics and promote smoother target extraction.

Every step serves the same purpose: controlling more variables before the arrow reaches your quiver.

Choose the Details That Matter

Spartan offers a versatile hunting platform with Super Sorted™ consistency and internal insert simplicity. Tier One 5.7mm adds measured alignment and advanced surface treatment for hunters seeking that additional preparation.

Both reflect the same belief: confidence comes from attention to the entire arrow.

Because when the moment arrives, every arrow in your quiver should deserve your trust.

You don’t get to choose your best arrow. You get the one that’s nocked.™

Black Eagle Arrows. Confidence starts here.