"Mil-Spec" ?

[3S16]

I'm building my first AR. I have a CMMG stripped lower and internal kit. I ordered one of those great deal uppers from Diamondback on Black Friday. I need to get a buffer tube assy for my Rogers Super stock.
Primary Arms has a "Spikes 6 position buffer tube assy" on sale, But it says "MIL-SPEC". Will this buffer tube work with my Lower receiver, or do I need a "Commercial" buffer tube assy?
My Rogers Super stock will accommodate either mil-spec or commercial tubes

[Str8Shoot3r]

You can go with either. Just make sure that the stock you select is milspec. If you go with commercial, you have on get a commercial stock. That's all. But your receiver will work with either.

[WizeWizard]

Always go Milspec, spikes is gtg in the buffer/tube area as well.

[Crusader]

Either will fit, but my advice is to go with Mil-Spec. It feels like there are more mil-spec stock options than commercial options.

[3S16]

Great. Thanks to all for your help.