Lone Wolf Distributors - Product Detail - LWD Barrel M/20L 10mm - $124.95
^^^This what I used in my stock Glock 20. I can now shoot about any style 10MM bullet that I can load. Also cut down on the "Glock Bulge"..Bill.
Why?
Never gone to different cals in glocks, will model 23 mags feed 9mm ???
Never gone to different cals in glocks, will model 23 mags feed 9mm ???