Looking for the optimal sling, mount, vfg and mount for TLR-1 and tape switch.  Hoping for a one brand/one stop shop. Suggestions appreciated!

Haven't bought anything AR related in 7-8 years so I'm not up on the what's what

Not sure on the one stop deal.  

I like BCM MLOK QD socket on the top 45 degree rail, BCM aluminum rail section for the light, and a Magpul MVG is good and light.

My favorite slings are Blue Force Gear VCAS

I dont think there's an objective "best" sling, vfg, etc for the platform. Tons of options that are highly capable depending on what you'd like out of the rifle.

I'll say this: you cannot go wrong with a Vickers two point sling. It's not the newest or most feature rich, but the thing just flat out works. You can mount it via QD, 550 cord, a Vickers uloop, HK hook, etc.

I'm seeing blue force gear vickers. Is that it or a different unit?

Same. The Vickers sling (VCAS) = BFG.

Ok thanks much. I think I got most of what I needed on one shot. Headed over to BCM for the VFG.

For your needs might be best to shop at one of the big shops like Brownells that carry a lot of everything. But best of luck to you for finding it all in one shot, because of the obvious reasons.

But from what you mentioned, I'm a fan of Impact Weapons offset QD sling mount, offset scout or offset rail light mounts, Arisaka offset scot light mounts, Magpul VFG, and BFG Vickers two point slings. For pressure pad mounts, either a Modlite for Surefire or a Cloud Defensive for Surefire. I know Cloud makes pressure pad mounts for Streamlight but i am not sure if it with work for your TR1 as they were made for the Protac line from Streamlight.