SureFire produces flashlights of widely varying sizes and power outputs. These range from the tiny Titan to the hand-held M6 Guardian. Surefire also produces military weapon lights such as the Hellfire weapon-mounted searchlight for the M2HB machine gun or Mk 44 Minigun. One of SureFire's most popular products is the 6P Original. It is roughly the length of an AA Maglite Mini-Mag, but produces roughly twice the output of a typical three D-cell incandescent flashlight. The Z2 tactical light, which has similar performance, is standard issue to the FBI and the United States Marshals Service.

SureFire models range from single-cell xenon lights to a large 20-cell HID model (also available with a rechargeable solution). Models employing an incandescent bulb offer the option of a brighter bulb (albeit at the cost of reduced battery life).

They also produce a line of LED flashlights which include features such as electronically-controlled power regulation (allowing them to run in both 6 Volt and 9 Volt bodies and with less battery power than necessary to light an incandescent bulb) and multiple levels of brightness. The company has moved from the Lumileds Luxeon LEDs to the more efficient Cree XR-E LEDs in some of the 2007 models. SureFire LED flashlights often have improved run time versus their incandescent lights of similar output

Most of their flashlights are powered by lithium CR123A batteries that allow for compact size and low weight while offering high power output. SureFire offers their own brand of CR123As at a price significantly lower than that found in retail discount stores. Without this channel for discounted batteries, some prospective buyers might hesitate to buy Surefire's battery-powered flashlights. Some of the flashlights are available with rechargeable battery packs.

SureFire flashlights are primarily made of aluminum, usually mil-spec type II or III hard anodized finish in various colors. Some less expensive models are made from Nitrolon, a proprietary impact-resistant, non-conductive, glass-reinforced plastic.

SureFire flashlights are waterproof and have various accessories, including red (night), blue (blood trail) and infrared (night vision compatible) filters, beam diffusers, beam covers, lanyards, pouches/holsters and spare battery/bulb carriers.

Weapon attachments

In addition to flashlights, the company produces dedicated weapon-lights employing either a shock-protected tungsten filament bulb assembly or LEDs to address recoil issues. The weapon-lights are available for shotguns (Remington 870, Benelli M1 Super 90, Mossberg 500/590 in full-size and 14" barrel versions), Heckler & Koch MP5 and MP-5K submachine guns, carbines / assault rifles (AR-15/M16, M4, Ruger AC-556, AK-47/AK-74/AKM, and Steyr AUG), and handguns (with integral Picatinny rails; for those pistols not having an integral rail, SureFire produces a series of rail mounts designed by famed gunsmith Timothy F. Lafrance).