There were no two pin G26s.It can do it then. But like Tailhunter was saying by the time you purchase a new slide, barrel, channel liner, striker, striker spring, cups, back plate, plunger, sights, recoil rod, mags....you get the idea.
You didn't put a 22 barrel in a 17 slide. You could have put a 17 barrel in a 22 slide, but it'd rattle around at the muzzle.How is this different than a Glock 17 and 22 ? I put a Glock 22 (.40 cal) barrel in a Glock 17 (9mm) slide and it works just fine (poly 80 lower) . I don’t get why this would be different . And the reason I bought the g17 slide is because there are sooooooooo many better slides for the g17 available than the g22 which there are not a ton . But again the out diameter of the g17 barrel is identical to the outer diameter barrel of the g22. So I don’t see how the g26 and g 27 would be different