Holster for NAA Mini Master 4" with ammo storage

North American Arms produces several small, unconventional revolvers, this one in .22 WMR/ .22LR.  The 'Mini Master 4 inch' is the "Biggest" of their little pistols, and from a 4" barrel, .22 Magnum is supersonic, producing 150 ft/lb of muzzle energy.  Their shorter barreled pistols are often carried as a backup to your EDC.  The customer owns several versions, but wanted to carry this one as a survival/woods option.  I shot 30 rounds though it and with slow, deliberate trigger pulls, was hitting a soda can sized target with 80% of those shots from 40 ft.  If needed, it could harvest small game for food, and be a defensive back-up in an emergency situation.  

This holster holds the revolver, 30 rounds, extra cylinder, and is under 9 inches long.  Using 7oz Conciera Walpier to keep things proportional, it can be belt worn, or stuffed in a pack with the whole package weighing less than a pound.  He can carry 5 rounds of .22 WMR in the cylinder, plus 10 rounds in sleeves. Additionally, he has a .22 LR conversion cylinder that can be swapped in, with 15 rounds of that on board. The conversion cylinder is loaded with 5 rounds of .22 LR and deploys with a pull-tab, from the inside.  The brass snaps from Hasi-Hato are the best available.  

As always, tell me what you want to EDC and I will work to make it happen.