When Surefire first started shipping their original XC1, I was completely uninterested. At 200 lumens, it was almost twice as bright as its closest competition in the low-profile CCW weaponlight category, Crimson Trace's LightGuard, but the switchology on the thing was a complete soup sandwich.
The rocker switch on the back of the light was momentary only; for constant-on, you needed to manipulate a little nubbin of a crossbolt-style switch on the light body.
Well, Surefire has fixed that with the new XC1-B, thankfully.
For starters, it's now putting out 300 lumens from a single AAA cell. That's as much as the TLR-1s I used in the Pistol Shoothouse class back in '15, albeit in a much tinier package.
The switchgear is upgraded as well. The rocker on the back can be tapped for on/off or push and hold to use it as a momentary. The crossbolt is still there to serve as a positive on-off.
These two upgrades transform the light from one that seemed kind of pointless into one that is a lot more viable. It's small enough that it adds no meaningful bulk to make concealed carry more challenging, the switchology is 30% less dumb, and it's bright enough to be reasonably useful. It's on the .357SIG compact to see how it responds to muzzle blast. I'll report back after I've got more than the one box of Speer GDHP warshots through the thing.
I would personally probably rather accept the challenges of carrying a regular WML, were I to decide to CCW a light-bearing gun again, but I wouldn't give someone side-eye for using this one, the way I would have the original.
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