The Kershaw Launch 4 uses a side-button automatic mechanism — press the button on the spine of the handle and the blade deploys instantly, locking open via the liner lock. To close, disengage the liner lock with your thumb and fold the blade back into the handle. The Launch 4 is a folding automatic knife — the compact 1.9-inch CPM-154 spear point pivots from the handle. Despite the compact blade length, the deployment mechanism delivers the same fast, positive action as the full-size Launch variants. Automatic knives are subject to the same state and federal restrictions as OTF automatics. See the legality FAQ below before purchasing.

Side-button automatic knives are subject to strict regulation under federal and state law. Under federal law, the interstate sale and transport of automatic knives is restricted. State laws vary significantly: some states permit automatic knives freely, some restrict blade length, some require permits or military or law enforcement status, and some prohibit them entirely. A 1.9-inch blade clears the carry length threshold in most US jurisdictions — but automatic knife classification is independent of blade length restrictions. Verify automatic knife legality in your state, county, and municipality before purchasing. Check your local laws at akti.org or call us at 888-225-9775.

The Launch 4 now spans three colorways — the 7500BRZ, 7500RAW, and 7500BLU — all sharing the same CPM-154 satin spear point blade, 1.9-inch blade length, side-button deployment, liner lock, and USA manufacture in Tualatin, Oregon. The handle finish is the only difference. The 7500BRZ runs bronze anodized aluminum — the warmest and most premium-reading colorway, rich golden-brown anodize creating a warm-on-cool pairing with the satin blade that reads as refined metallic hardware. The 7500RAW runs raw unfinished aluminum — bare metal developing a natural patina with carry, the most materially honest configuration. The 7500BLU runs blue anodized aluminum — bold saturated blue in the same cool register as the satin blade, the most color-present and visually assertive configuration. All three deliver identical CPM-154 cutting performance. For warm-premium refined carry, the 7500BRZ. For bare honest patina-developing metal, the 7500RAW. For bold blue color presence, the 7500BLU.

Satin CPM-154 shows the natural cool silver-grey of polished stainless steel — smooth, reflective, and in the cool metallic register. Bronze anodized aluminum sits in the warm metallic register — a rich golden-brown tone that is the warmest anodize color in the Launch 4 lineup. The contrast between cool silver satin steel and warm golden-brown bronze creates a warm-on-cool metallic pairing that reads as deliberately premium. Both are metal-native finishes — satin is polished steel, bronze is anodized aluminum — and together they read as refined hardware rather than a painted surface. Bronze anodizing creates a hard aluminum oxide layer integral to the metal — the color cannot chip or peel.

The Launch 4's 1.9-inch blade fills the carry niche that larger automatic folders cannot fill. A sub-2-inch blade carries in a shirt pocket, a suit jacket, formal wear, or alongside a phone without creating the profile that a 3-inch-plus folder creates in those contexts. It delivers automatic deployment capability — instant one-hand access with no manual technique required — in environments where discretion, minimal bulk, or dress carry constraints apply. The 1.9-inch spear point handles the full range of everyday light cutting tasks, and CPM-154's edge retention keeps the blade functional through extended carry cycles. It is also the right backup automatic for buyers who carry a full-size Launch as their primary.

Kershaw offers a lifetime warranty against defects in materials and workmanship. If the knife fails due to a manufacturing defect, Kershaw will repair or replace it at no charge. Warranty service is handled directly by Kershaw — not Knifeworks. Submit a claim through Kershaw's website at kershawknives.com with a description of the issue and proof of purchase. Normal wear, cosmetic satin finish wear, handle anodize wear, sharpening, and damage from misuse are not covered.

The Kershaw Launch 4 7500BRZ is manufactured in the USA at Kershaw's production facility in Tualatin, Oregon. Domestic manufacture is a consistent feature of the full Launch series. The 7500BRZ carries the Kershaw Lifetime Warranty against defects in materials and workmanship.