was thinking of getting (down the road) a g20. question, can i just get a conversion barrel and a 10mm mag.for my g21 instead of having to buy a g20. i would think it would be a whole lot cheaper if i could to just get barrel and mags. i would be carrying the 10mm. for in the woods. would it be reliable enough? if i had to pull it out on a bear, pig etc. thanks guys.