So I just took delivery of the DeSantis Storm Packer which is a stock sleeve to hold two extra M9 mags. I used to have a Ruger PC4 before I sold it and when I had it I wished I had bought the Uncle Mikes stock sleeve for it. When I finally went to buy it, you couldn't find them, so I know things like this are scarce because they are for a specialized weapon. That's why I just purchased the Packer.

First impressions are that it is well built and fits on the stock very well. What I can't believe is that they used snaps to close the pouches instead of Velcro which you could adjust according to the length of the magazine. The pic you see has two standard 15 round mags in it and look at all the wasted room, that could be tightened down if they closed with Velcro. Stupid.

(See post below, issue fixed)

Having said all that, I absolutely love my Beretta Storm Cx4 in 9mm!

I have 30 round magazines and they don't fit of course. I don't have any 20 round magazines, but I've heard they will fit.

I almost bought it directly from the Beretta store, which usually has very good discounts.  But I found it at Optics planet for $25.99, which is the best price by far of anywhere I found. Good luck, and let me know what you think.

Dem toes tho'

lol

Im dropping the ice bucket challenge on all the kydex masters to make a stock sleeve with 2 mags. C'mon some kydex jedi has to be up for the challenge to do something that's streamline for a cx.

Read this so I don't have to type the explanation of how to make 20 round mags fit.

Hey! That's my thread!  

And yes, it does contain the answer to  adjust the pouch. I just did it today and it fits my 15 rounders perfectly.  If only DeSantis would have put instructions in the bag.  

So I guess I am a fan of it now.

Me too,
Got one for my 9mm & my .45.