Have a Sig P220 and P226 ...and a .22 conversion slide which works on either frame.
...just need the correct .22 magazines for either frame.
My solution is keep the pistol in primary caliber then change to .22 as conditions dictate. Needs CCI Stinger ammo or similar to cycle slide.
The .22 conversion has great sights, shoots straight like a ray gun, same feel/trigger as primary caliber...22 ammo light too.
Even if you have all the slides/barrels to change over, still need matching mags to feed. All that stuff is heavy!
