I’ve got one, really like it, and am probably going to get another one.
It does have differences from a mil-spec A-1 stock, though.
The A-1 length buffer screw that comes with it is a hex screw, not a slotted one, and lacks the bleed hole. It works, but I got a mil-spec A-1 screw for mine. You could also use your existing A-2 screw by shortening it.
It does not have the foam insert of a mil-spec stock. I’m not sure, but I suspect the foam is used by the military both to strengthen the stock and to reduce noise.
However, the absence of the foam results in a larger storage compartment, which is nice.
The butt plate that comes with it is a fairly flimsy affair. It has a larger door leading into the storage compartment.
You can use your existing A-2 butt plate instead, which is what I’ve done. However, it’s smaller door makes getting things out of the storage compartment a little tricky.
The slot for the sling swivel is much larger than on an A-2 stock and allows the sling swivel to be installed straight down, or to the right, or to the left. I installed mine straight down. However, since I sling up fairly tightly, the sling swivel has started to rotate sideways.
Incidentally the sling swivel and the mating screw are not supplied. However, the ones off your A-2 stock will work.
None of the above is intended as a criticism. Most of this is no doubt a result of the understandable need to keep the stock affordable.
Again, despite my above remarks, I really like the stock.