(mods..if this is in the wrong forum...or is leading to offtopic by not using glock's accessories..much apologies and please move to appropriate forum) Hi there!! Got a question I'd like some of youse opinions. I have a G27 and I was talking to my gun dealer about maybe doing a 40 to 9 conversion by dropping in a 9mm barrel through glocks parts place or whatever. He was VERY ADAMANT that I should not drop in a 40 to 9 conversion because he said "If you're gonna get a 9...you might as well just buy the gun itself and what a lot of people dont know is..if you drop the barrel in..you need to buy 9's mags." I know that but, looking from a financial standpoint, would it be cheaper to get the barrel, and mags itself? Would I get any good trade-in and just pay the difference in a G27 to G26? I was thinking of doing the 9 drop in and keepin the 40 for if I ever want to go back to 40 cal. Opinons? No flaming...just want to know pro's and cons. Thanks!