Weapon light fitted to the H&K USP's underbarrel accessory rail. Durable and bright.

Insight Technologies refuses to give out measurements and battery life.

Cheap, small, relatively light, but not very bright. Don't use a flashlight enough to warrant an expensive one that only runs for one consecutive hour before you have to replace the three dollar battery (That's kind of messed up.) but occasionally need one that's light and small? Get one of these then.

Twist cap switch with adjustable beam focus. Yellow beam with ugly "black hole." Includes spare bulb in the battery compartment cover.

Though seemingly pointlessly less expensive than the 4-cell variant, the 2 D-Cell Maglite is the perfect size for stashing in a single-man space ship.

On-off power button with adjustable beam focus. Yellow beam with ugly "black hole." Includes spare bulb in the battery compartment cover.

The definitive combat flashlight. Blindingly bright, nine hour battery life, and heavy enough to knock the head off a 300 pound biker hopped up on PCP.

Oh, and it's great for outdoor use. A little unwieldy, but it is a multi-tasker--something Alton Brown would like.

On-off power button with adjustable beam focus. Yellow beam with ugly "black hole." Includes spare bulb in the battery compartment cover.

The XML (X-Treme Mini-Light) is one of the world's smallest weapon lights, designed specifically for the Springfield Armory XD Sub-Compact, but fits other weapons. Attaches with a simple spring-loaded locking arm.

The 6P Original is a small, lightweight, high-output flashlight for all-purpose use. Equipped with a push-button tail cap for momentary light, or twist for hands-free use. Perfect size for every day carry. Like all Surefire lights, the 6P doesn't have the "black hole" you see on most cheaper flashlights; just a consistent, full, round beam.

This ultra-compact flashlight is bright enough for every day use, and small enough to forget it's there. Equipped with a metal clip to clip it to your pocket, hat, etc. Equipped with a push-button tail cap for momentary light, or twist for hands-free use. Like all Surefire lights, the E1E doesn't have the "black hole" you see on most cheaper flashlights; just a consistent, full, round beam.

Essentially a slightly modified 6P Original with a heavy-duty polymer body.

This high-output flashlight is perfect for tactical, duty, and spotlight use. Equipped with a push-button tail cap for momentary light, or twist for hands-free use. Like all Surefire lights, the M4 doesn't have the "black hole" you see on most cheaper flashlights; just a consistent, full, round beam. Equipped with shock isolation system to withstand impact.