Re: So, I picked up a new Rem 700 SPS Tact 20" 308
Big Al, good purchase first off! I've got my SPS-T and love it. Its wearing a Leupold Mk2 3-9x40 w/MilDot. And even though I only got 10 rounds down the tube before going back to the sandbox I love it. Its a great gun for the price.
Now I have a question for you.... When you say that you want to make it tactical what are you mean? Do want to get every accessory possible or just make it "practical"? With mine I bought a decent sling, Mamba from Texas Hunt Co (hunting versions of the SpecOps brand slings) and use my Harris Bipod. Just by spending an hour or so anyone can find a plethora of "tactical" gear out there.
I suggest buying a sling that works for you. Get a Harris Bipod, I personally like the swivel 9-13 incher with leg notchs. I did buy myself an HS Stock, but for a steal off Gunbroker. Honestly though, I love the Hogue stock. Alot of people rip on it but it can be fixed. There are several pages on here about bedding it and "fixing" the forend. I love the grip that it provides. I'll be using it as my project stock for bedding experience (I was about 12 when I help my dad bed my 7mag so it's been a while).
The biggest reason I ditched the stock was because I want to camo it up and DuraCoat isn't recommended on it. What I will do is Duracoat the rifle and HS stock and use Krylon Fusion on the Hogue to match the HS, just for shits and giggles.
Get yourself a sling, bipod, spotting scope, range finder, build up your dope for the load you use, camo it up, buy a stock pad to get good cheek weld, etc etc. There are alot of more pratical things you can get and use for any guns that you own. If you are trying to make your gun "tacti-cool" to where you can mount everything imaginable on it buy yourself an AR. I'm not knocking all the cool kid gear, it's just better suited for me personally on one of my AR's.
I did get a bold knob installed on mine though. AZ Precision did mine. Excellent work on it and well work it for the practical/tactical aspect. HOpe this helped you out.