Benchmade 3370GY Claymore OTF Knife Black Grivory

The Benchmade 3370GY Claymore is a double-action out-the-front automatic dagger built around a 3.89-inch CPM-D2 tool steel blade and a Black Grivory® handle. The Claymore deploys with a thumb slide, locks in either direction with no manual reset, and runs ambidextrously for either hand. Made in Oregon, USA, and backed by Benchmade's lifetime warranty and free LifeSharp re-sharpening for the life of the knife.

Key Features

• Double-action OTF mechanism: Thumb-slide deployment and retraction in either direction.
• CPM-D2 tool steel blade: 3.89-inch double-edge dagger, 60-62HRC, PVD-coated in Smoke Gray.
• Grivory® handle: Glass-filled thermoplastic composite. Lightweight, durable, and weather-resistant. Black.
• Deep carry pocket clip: Tip-down, black, black oxide finish.
• Fully ambidextrous — runs in either hand.
• Made in Oregon, USA.
• Benchmade lifetime warranty with free LifeSharp service for the life of the knife.

Why It Matters in the Field

The Claymore is Benchmade's full-size OTF dagger — a dedicated tactical blade purpose-built for one-handed deployment when the support hand is occupied. The double-action thumb slide lets the knife fire and retract on the same control, so closing requires no reset, no second button, and no two-handed manipulation. The 3.89-inch double-edge dagger commits the geometry to a tactical role rather than a utility cutter, with a piercing tip and symmetrical edges for control under pressure.

The Grivory® handle drops weight to 2.97 ounces while resisting water, salt, and temperature swings — a meaningful spec for operators carrying through coastal, humid, or extreme-cold environments. CPM-D2 powder-metallurgy tool steel runs 60-62HRC, hardness on the upper end for an OTF, with the wear and corrosion resistance to back it.

Specifications

Why tacticaledge.com Carries It

Benchmade is a foundational brand in this lineup — Oregon-made, lifetime-backed, and trusted across military and LE communities for over four decades. The Claymore brings Benchmade's OTF capability to the duty-grade tier with CPM-D2 steel, a true double-action mechanism, and a Grivory handle that holds up where harsher environments would compromise softer materials. For operators who carry an OTF as a real tool rather than a desk knife, the Claymore earns the spot.

FAQ

Is the Claymore OTF legal where I am?

OTF and automatic knife laws vary by state and locality. The customer is responsible for verifying state, county, and municipal regulations before ordering. Benchmade requires acceptance of the AKOA (Automatic Knife Owner Agreement) at checkout for automatic knives. Active-duty military and LE personnel are typically exempt from most automatic knife restrictions.

Does it ship to APO/FPO addresses?

Yes. tacticaledge.com ships free to all APO and FPO addresses. Automatic knives may carry additional restrictions on overseas shipment; reach out before ordering if you have questions.

How does CPM-D2 compare to standard D2?

CPM-D2 is a powder-metallurgy version of conventional D2 tool steel. The smaller, more uniform grain structure improves toughness and edge stability, which is why Benchmade selected it for a dedicated tactical OTF.

What is LifeSharp?

LifeSharp is Benchmade's free in-house re-sharpening service. Send the knife in and Benchmade will sharpen it back to factory edge, clean it, oil it, and adjust it as needed — for the life of the knife. There's also a paid membership tier with expedited service.

Is the Grivory handle as durable as G10?

Different material, different trade-offs. Grivory is a glass-filled thermoplastic widely used on production automatic knives — lighter than G10, with strong impact and weather resistance. G10 is more rigid and abrasion-resistant. For an OTF where weight and weatherproofing matter most, Grivory is purpose-built.

Can I deploy and retract with one hand?

Yes. The double-action thumb slide handles both deployment and retraction on the same control, and the knife is fully ambidextrous.

Is this the same Claymore as the 9070 fixed-blade automatic?

No. The 9070 Claymore is Benchmade's push-button automatic folder. The 3370GY is the OTF version of the Claymore family — a different mechanism class entirely, with the blade deploying linearly out the front rather than pivoting.