Sig Sauer KILO4K SOK4K601 | 6x22mm OIS

The Sig Sauer KILO4K is a stabilized ballistic rangefinding monocular designed for long-range measurement and on-device ballistic computation. It combines optical image stabilization (OIS) with a 6x magnification and a 22 mm objective to reduce handshake and improve target identification at distance. Onboard Applied Ballistics Ultralite and environmental sensors provide real-time ballistic solutions, and BDX 2.0 enables low-energy Bluetooth communication with compatible devices.

Typical applications include precision long-range target shooting and range estimation for hunting and scouting. The KILO4K is built to operate in the field with IPX-7 waterproofing and runs on a single CR123 battery with an advertised run life measured in ranges.

Product Specifications

• The manufacturer is Sig Sauer Electro-Optics.
• The model is listed as KILO4K.
• The manufacturer part number is SOK4K601.
• The magnification is 6x.
• The objective lens diameter is 22 mm.
• The field of view is 6.50 degrees.
• The eye relief is 15 mm.
• The overall length is 4.1 in.
• The height is 3.1 in and the width is 1.6 in.
• The weight is 7.5 oz.
• The maximum ranging capability is up to 4000 yds.
• The unit uses (1) CR123 battery as its power source.
• The waterproof rating is IPX-7.
• The advertised run life is approximately 4,000 ranges.
• The UPC is 798681644803.

The KILO4K pairs stabilized optics, an onboard ballistic engine, and BDX 2.0 connectivity in a compact monocular designed for extended field use. Its feature set is focused on reliable, repeatable range measurement and direct integration with compatible ballistic devices to streamline holdover and aiming solutions in real time.