Glock 17 mag width

Thanks, that's 3mm less.

I was asking to work out if the kydex mag pouches would work across both.

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Your conclusion to above ?

A kydex pouch for G17 won't fit a G20 mag.

Thanks, that's 3mm less.

I was asking to work out if the kydex mag pouches would work across both.

I carry my extra mag (S&W M&P9) in a Mamba mag pouch (kydex & leather) designed for Glock 17/19. It took a while to wear in, but works well.

Thanks, that's 3mm less.

I was asking to work out if the kydex mag pouches would work across both.

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Your conclusion to above ?

Thanks, that's 3mm less.

I was asking to work out if the kydex mag pouches would work across both.

22.8mm x 33.3mm for a G26/4 10-shot factory mag.