Re: Scope Lens cleaning
I've used Lens pens for years on optics and 10K Aviation NVG tubes and have never had a problem. In purchasing my 1st USO and looking at their recommendations, I'm now following that and agree with their logic.
Best thing I ever did was buy a few small cans of air (Used for computers) and that usually takes care of anything I would encounter on the range or in the field. If you miss a small piece of grit with the pen brush, you'll probably scratch the surface of the optic when you switch over to the pad.
Just my .02