What action wrench do I need?

[mugsie]

I'm planning on building my own tack driver and will be purchasing a Savage in 308. Don't know what model yet (already own a 10FP in .308 and a 12BVSS in .223, but want to build something else, or maybe just swap out barrels to different calibers. Anyway, what action wrench do I need? Are there different ones for different models or does one size fit all? I'll also need a barrel nut wrench too, as well as a couple of go / no go gauges for the caliber I'm building. Anything else?

Thanks people.

[geargrinder]

Both are on sale at Midway.

Action Wrench

http://www.midwayusa.com/viewproduct/?productnumber=710783

Nut Wrench

http://www.midwayusa.com/viewproduct/?productnumber=288765