Alas, it doesn't mean anything at all. In fact, the SA MilSpec is vastly better than any 1911 ever issued by any government to it's military. The GI "slabsides" could only feed GI hardball ammo, had poor sights, and a terrible trigger. I have done accurizing jobs on a couple, and they had grooves cut in the hammer hooks to engage the sear, and their barrels were loose at full lockup.
Lest anyone should try to suggest that the 1911 was intended to be like that, I have handled and shot several guns made between WWI and WWII, and they were exceptional in their fit and function.
It's a 1911, so any 1911 parts will fit. Maybe. And maybe not with a Para. I like Para's Warthogs a lot, but they are not a manufacturer that worries a lot about the 1911A1 ordnance drawings. Still, the Warthog is a terrific 1911... Sort of a 1911 anyway
All I know about it for sure is that it has a 14 round double stack mag. To me that's far from any "mil spec" classification
But I'm just getting into 1911's as of late so my knowledge of them is limited.