non-scw and scw ver 1 slides are compatible. SCW ver 1 still operate on on the magna blowback system. Magna blowback system and SCW use the same parts.
Frames, i'm unsure of, but i will assume they are since SCW v.1 slides will operate on my SV frames.
I'm pretty sure you can get a non scw or scw v1 slide and it will work.
If your gun is SCW v2 or v3 then you will have to get specific slides to those.
If you pull the slide back, does the loading nozzle stay in the chamber for a second and then go back with the slide? if so, do you see any springs on top of the nozzle?
if you see any springs there you prolly have an SCW2
another way to check that is to pull the barrel assembly out of the slide. Take the outer barrel off. If you see a spring over the inner barrel between the chamber and the black nub thing at the end of the inner barrel then you have an SCW2 gun.
AFAIK the only SCW3 gun is the new WA 1911s... come with a 22round mag as well.
And FYI, the both 15 round and 22 round mags work in the single stack 1911s despite the versions.
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