I don't have any +0 versions but the Pearce +1 and +2 models work reliably on my G27 mags. My only complaint is that it takes time before you you can force in the extra round(s). The extra grip space is great. To me the +1 is "just right"! (So I moved the +2s to some G22 mags, and sure enough, still only one extra round!)
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek
Last edited by Quentin; 05-03-2014 at 06:48 PM.