Anyone have a buzzing sound coming from the tail when using the pack? Normal?
I just noticed after installed some freshly charged cells there is a real good buz coming from it.
Are these still available?
We talking about the Surefire m6
I still have a whole bunch of these PhD's, compiler, programmer unit, etc.
Just checking in to say that my PhD-M6 is still in use and going strong 9 years later! Now using 16650 - 17670 don't really seem to be as common anymore.
Thank you for such a great product.