Gen 4 Glock 21, will interchangeable backstraps illiminate the G21 SF?

[blasternank]

I was looking at the G21 SF. I have smaller hands and the G21 grip is just too big for me to control easily. Anyway, the Generation 4 G21 has the interchangeable back straps. My question is does the small insert on the Gen 4 G21 equate in size to the G21 SF? Or if I want a Gen 4 G21 SF I just need to wait til they come out with it?

Thanks.

[bodhisattva]

With the smallest backstrap, the Gen4 G21 frame is the same size as the G21SF.

[ST911]

With the release of the gen4, the SF is obsolete.

[RagweedZulu]

There won't be a Gen4 SF since the naked Gen4 frame is the same size. The real differences are in the recoil spring and trigger group. Some prefer the Gen4 but I stick with the Gen3 SF models and couldn't be happier.

[R0CKETMAN]

The Gen 4 without a backstrap will feel noticeably smaller than a 21sf.