used surefire are in your budget without mount,

Bought a E2D defender for 20 dollars, a couple years back, and also got a G2 used for 50,

for 100 dollars Surefire P2X Fury cannot be beat, warranty, build quality, light quality. It will outperform anything from a reputable company at that price point.

Looking for a long throw. I've already got a cheap PEQ with a flashlight that diffuses somewhat nicely which will light up an entire room.

dereelight. end of story. their reflector models (DBS-T) are pretty swell, but hot diggity damn, aspherics. the NM400 is roughly surefire 6p-sized, but slightly bigger, and throws like a mother goose. probably won't fit 6p rail mounts though. strictly speaking though, the p60-sized units aren't really the optimal platform for throw.

if you play a lot of night games and have an urge to to be like "fuck anybody with NODS in that particular area", somebody on ASM strapped an xsearcher to his rifle, so you wouldn't be the first. DOOOOOOOOOO IIIIIIIIIIITTTTTTT.