Rem-oil is lousy, in my experience, though it’s good for wiping down tools.
DPMS said specifically not to use Rem-oil in my LR-308 rifle. Thought that was interesting because DPMS was owned by Remington...
I’ve always heard not to use Teflon in high heat applications, so, I wouldn’t use your Chain and cable lube on guns. You don’t know what concentrations of Cerflon/Teflon exist in gun lubes vs. in this lube, so it may have way too much, or it may be fine. Too many unknowns for me.
It’s also pretty sticky and viscous, isn’t it? I wouldn’t use it on a semi auto for that reason alone.