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The “Grandfather” of Tactical Knives Gets a Cutting-Edge Update

After decades, this legendary folding blade is faster than ever.

Closeup of Emerson A 100 Automatic Knife on tactical pack next to dog tagsBlade HQ

By Sean Tirman

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A few decades ago, Ernest Emerson designed a folding knife he dubbed the A-100. As simple and elegant as it is powerful and robust, this knife helped change the industry forever.

Widely considered the “grandfather” of the tactical knife category, it has remained largely unaltered since its first release. However, that’s all about to change with the introduction of the Emerson A-100 Automatic.

Emerson A 100 Automatic knife on gradient green yellow background
While the silhouette remains unchanged, the automatic deployment launches this classic design into modernity.
Blade HQ

Better, faster

The A-100 is such a good knife that it probably never needed to change. That said, this new version’s updates are welcome for anyone who values speed and efficiency in their EDC knives.

The biggest change in this version is its automatic deployment. Whereas the original was a manual folder with a thumb disc, this one has a push-button opener that launches the blade quickly and smoothly.

While there are legal implications surrounding this change — some regions have restrictions on what they call “switchblade” knives — it suits the tactical nature of the knife very well.

Emerson A 100 Automatic knife closed on some mesh cloth
Outside of the new deployment, the A-100 Automatic thankfully stays true to the original’s spirit.
Blade HQ

Honoring its storied past

The new deployment means the handle gets a material swap. It’s now made from sturdy, lightweight aluminum and has grippy G10 inserts. However, most of what makes this knife so good remains unchanged.

The drop point blade is still made from tough, corrosion-resistant 154CM steel. It has a tip-up pocket clip for easy, reliable carry. The silhouette is just as simple and sleek as always. Best of all, it maintains its USA-made status.

Pricing and availability

The Emerson A-100 Automatic is available exclusively at Blade HQ. Furthermore, the updates and upgrades understandably come with a price hike.

Getting one of these modernized icons will cost you $400. Despite its MSRP, it’s a rarified EDC knife that will undoubtedly sell out.

One last thing: Check your local laws and regulations regarding automatic knives before buying.

Stay Sharp