Hello all, I'm new here. I am about to purchase my first glock but thought I'd post a question here to you all to maybe get some advice. I understand that glocks tend to lend themselves pretty well to caliber conversions, most usually done with barrel replacement kits. And I know this is the most common and probably most cost effective way to accomplish them. Knowing all this I still would like to do conversions with a full slide replacement even though of course it is more expensive to go this route. I have heard the full slide swap is the way to go if reliability is a concern, specially for a dedicated EDC arm. So my question, is there a source here or somewhere else that shows which frames are fully compatible with which slides etc? Like a list or diagram I could consult? For example I am thinking of getting a G26 3rd gen as my first glock, I already own a Sig 226 in 9mm so thought it would be a good starting point since I already own that caliber. But would I be able to buy say for example a full g27 slide in the future and mate it to the frame? (I understand I would need new mags too). Is this doable with glocks? Sigs for example I've been told slide conversions are not "recommended" because not all frames are created equal apparently even on the same model line and shooting a .40 cal slide on a 9mm frame could supposedly cause future problems. This coming from a sig service rep directly so who knows. Does glock service hold the same view? Any warranty concerns? So any advice on conversions using full slide replacements is greatly appreciated. By the way, I am in CA so yea, I'm limited to 3rd gen everything sadly. Thanks all.