I had him make me an 'incognito' IWB for a Ruger LC9 when it first came out, and it is incredible. Probably the main reason I still have that gun is because the holster is so excellent and comfortable. I also have an Incognito for my Browning Hi Power and HK P7.
The only problem with holster makers is there are so many good ones. I wish I had this unlimited pot of money and could buy one for each gun from each great holster maker, and change holsters and guns like I change my underwear .... at least once a day.
There are a few leather holsters on ebay if you want to check them out. They are made by a fella that goes by "barsony714." He has pretty good feedback considering the number of items he has sold. For the price they might work until you could get a custom holster made. You might also consider buying some kydex and making your own kydex holster. Plenty of youtube videos that show how to do it.
I also have a BDM.. (great gun, but it's gotta be kept clean) I use any holster made for the browning High Power. Who makes holsters for the Browning high power?... why Browning does but they are mostly field holsters. I use the BDM in armed security work.. I have a generic drop, leg holster that carries it fine.
Check out Fist Holsters. I've done a couple of BDM holsters with them and have been fairly impressed. Good stuff.
If you check around, you'll find several holster makers do indeed list the Browning BDM. Easy to find, if they've got their online ordering with the list of firearms they support; a bit more difficult to find, if not. Fact is, too, if you find they don't have a mould gun then you can mail them your frame/slide and have them use that.
IIRC, Blade-Tech and Barsony are two holster makers who also support the BDM. Check for any maker that supports the BDA and the Hi-Power, too. As suggested above, you might well find that those designs are known to that maker to support the BDM as well. Not an exact fit, but it might well be good enough.
Couldn't find one for my BDM and I didn't want to pay to have one made. So I did some reading. Watched a few tutorials on YouTube, went to Tandy and got some leather and a few tools and made my own. Not real pretty but very functional.
If you like working with your hands, it's easier after you've done a couple.
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