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The Blackhawk Stache IWB holster base kit for FN 509 is a modular, ambidextrous inside-the-waistband system built for shooters who want to customize their carry. This is a true kit foundation—the base holster itself—designed to grow with your needs through Blackhawk's expanding ecosystem of Stache accessories and quick-swap components. Whether you're running iron sights or a red dot mounted to your slide, the Stache accommodates modern pistol setups without compromise.
Built from injection-molded polymer, the Stache delivers genuine strength in a thin profile that vanishes under a shirt. The material is naturally smooth with rounded edges—a real comfort advantage on an IWB rig you'll wear eight or ten hours a day. The included 1.5" J-style belt clip is adjustable for both ride height and cant angle, so you can dial in exactly where and how the holster sits. Need a wider belt? Blackhawk sells a 1.75" clip separately to match your setup.
Ambidextrous by design, the Stache works for both right- and left-hand carry without configuration swaps. Passive retention is friction-adjustable—you control how much resistance you feel on the draw. A low-profile shirt guard keeps the gun tucked tight without getting in the way when you're drawing. This kit is engineered to pair with Discreet Carry Concepts Gear Clips and other Stache modular add-ons (sold separately), so you can evolve your carry without replacing the whole holster. Made in the USA.
| Product Name | Blackhawk Stache IWB Holster Base Kit |
| Model | 416086BK |
| Firearm | FN 509 |
| Carry Type | Inside-the-waistband (IWB) |
| Orientation | Ambidextrous (right or left hand) |
| Retention Type | Friction-adjustable passive retention |
| Material | Impact-reinforced injection-molded polymer |
| Belt Clip Included | 1.5" J-style clip (height and cant adjustable) |
| Red Dot Sight Compatible | Yes |
| Modular Compatible | Discreet Carry Concepts Gear Clips, Stache IWB accessories |
| Country of Origin | USA |
Yes. This kit is specifically designed for the FN 509. The holster will accommodate the firearm with or without a red dot mounted to the slide.
Yes. The Stache is fully ambidextrous and can be adapted for right-hand or left-hand carry without any part swaps or modifications.
The base kit includes the Stache IWB holster and a 1.5" J-style belt clip that adjusts for height and cant. Additional Stache accessories and clips are sold separately.
Yes. The Stache is modular and compatible with Discreet Carry Concepts Gear Clips and other Stache IWB carry accessories (sold separately), allowing you to customize your setup.

SKU: 115715106 • Weight: 0.4oz