If in any doubt after looking at their fit chart online, just give them a call --- they are very nice friendly folks, eager to help. I once stopped in thinking I needed a particular size, but "Mrs. Ralph" insisted that I try it for size. Fortunately, I had the gun in the truck, and lo, the chart was close, but not precise. She ducked into the back, and re-emerged with an exact fit, in the color I wanted! By the way, it won't hurt to purchase a slightly oversize unit, which may accommodate a longer barreled future purchase --- they offer spacers to help fit short barrels on large frames, etc. A parsimonious friend throws any gun he wants to carry into their largest size holster, sort of a "one size fits all" arrangement... It's doesn't provide a precise fit, but these are not "quick draw" rigs and will never be the equivalent of a precisely boned leather holster, so a slightly oversized compartment is not a great liability...