Uncle Mike's 83031 Sidekick Vertical Shoulder Holster Shoulder Size 03 Black Cordura Harness Fits Med/Large DA Revolver Fits 5-6.50" Barrel Right Hand
- Type:
- Shoulder Holster System
- Firearm Group:
- Revolver
- Hand:
- Right Hand
- Finish-Color:
- Black
- Firearm Fit:
- Med/Large DA Revolver
- Mount Type:
- Harness
- Size:
- 3
- Material:
- Cordura
- Other Firearms Fit:
- Revolver
- Compartments:
- 1
The Uncle Mike's Sidekick Vertical Shoulder Holster in Size 03 is a practical choice for shooters who want to carry a medium or large double-action revolver with a 5–6.5" barrel across their torso. Built from tough black Cordura material, this right-hand holster distributes weight evenly across your shoulder and side, making it comfortable enough for extended wear during hunting, range days, or field work. The vertical carry position keeps your firearm accessible while remaining relatively concealed under a jacket or shirt, and the design works whether you're wearing it inside or outside your outer layer.
What sets the Sidekick apart is its balance of retention and adjustability. A self-adjusting belt loop holds the holster snug against your side, while a fully adjustable shoulder harness with 2½"-wide nylon web straps and a self-centering back-piece lets you dial in fit for your frame—the system accommodates chests up to 48". A retention strap with a combination adjustable buckle and snap keeps your revolver secure, even when you're moving hard. An offside tie-down anchor lets you add a speedloader or magazine pouch to the harness, keeping reload capability within reach.
This is solid, no-nonsense carry gear for hunters, field shooters, and anyone who spends time outdoors and wants their firearm accessible without a belt rig or waistband holster. It's the kind of holster that works quietly in the background, staying put and getting out of your way while you focus on the hunt or the shot.
Key Features
- Vertical shoulder carry with even weight distribution across torso
- Self-adjusting onside belt loop keeps holster positioned close to body
- Fully adjustable shoulder harness with 2½"-wide nylon web straps
- Self-centering back-piece for balanced, stable fit
- Retention strap with combination buckle and snap for secure firearm control
- Offside tie-down anchor for speedloader or magazine pouch
- Fits chests up to 48"
- Wear inside or outside jacket
- Durable black Cordura construction
Specifications
| Brand | Uncle Mike's |
| Model | Sidekick Vertical Shoulder Holster |
| Size | 03 |
| Hand Orientation | Right Hand |
| Material | Black Cordura |
| Firearm Fit | Medium/Large Double-Action Revolver, 5–6.5" Barrel |
| Also Fits | Single-Action Revolver, 4 5/8–5 1/2" Barrel |
| Harness Strap Width | 2½" Nylon Web |
| Chest Size Range | Up to 48" |
| Carry Position | Vertical Shoulder (Inside or Outside Jacket) |
Frequently Asked Questions
What revolvers does the Size 03 Sidekick fit?
The Size 03 is designed for medium and large double-action revolvers with 5–6.5" barrels. It will also accommodate single-action revolvers with 4 5/8–5 1/2" barrels. If you're unsure whether your revolver fits, check its barrel length and action type against these specs.
Can I wear this holster under a jacket?
Yes. The Sidekick is designed to be worn inside or outside your jacket, so it works well as a concealed carry option under a shirt or coat, or as an open carry rig if you prefer.
How adjustable is the shoulder harness?
The harness features a fully adjustable design with 2½"-wide nylon web straps and a self-centering back-piece. The onside belt loop is also self-adjusting, and the overall system fits chests up to 48", allowing you to customize the fit for your build.
Can I add a speedloader or magazine pouch to this holster?
Yes. The offside tie-down anchor lets you attach a speedloader or magazine case vertically or horizontally, keeping reload capability accessible on the harness.

