I bought a S&W holster at a yard sale for $5.00. It looked like it would fit a 4 inch DA revolver, which it did in fact fit my M10 and my GP-100 both. This holster is marked 22 and 34...

I was looking at some other holster pics the other night and it hit me that the new holster looked an awful lot like some of the early 1911 holsters...so I tried it with my Springfield Champion (Commander)...it fit like a glove.

It rides a little too low for CCW but out in the field it should do nicely.

(I thought I posted this earlier, but I guess I didn't.)

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USAF AMMO!

Good find. The 22 is the type/model of holster and the 34 is the size, designed to fit a K frame 4".