Collection: 4BROS RaceCar Appendix Rig Collection

Designed for Comfortable Appendix Carry

Built for appendix carry without fighting your body. The 4BROS RaceCar Appendix Rig combines our precision-molded IWB holster and magazine carrier with a flexible, injection-molded adapter plate designed to articulate with your body's natural contours and movement.

That flexibility allows the rig to move and conform more naturally against the body, helping reduce common pressure points while improving comfort and concealment during everyday carry. The connected design keeps your firearm and spare magazine together in one streamlined appendix carry setup—designed to move with you, not against you.

Built on the Same 4BROS IWB Foundation

Each RaceCar Appendix Rig uses our proven IWB holster design, precision formed from durable .093" Kydex thermoplastic for a secure, consistent fit. Adjustable retention lets you fine-tune your draw, while the optics-ready profile is cut to clear most popular red dot sights.

Paired with a matching IWB magazine carrier and the flexible RaceCar adapter plate, the result is a complete appendix carry system built around comfort, concealment, and adjustability—available for a growing selection of firearm and weapon-light configurations.

22 products

Whether you're carrying stock or upgraded, our holsters are designed to keep you ready.

✔ Custom-molded for each pistol
✔ IWB, AIWB & OWB carry options available
✔ Light and optic compatible
✔ Made in the USA and field-tested for function

Stay Ready. Stay Sharp. Choose a Four Brothers Holster and carry with confidence.

Four Brothers Holsters are proudly made in the USA!

Frequently Asked Questions

Visit our FAQ page for answers the most common questions we receive.

Shop All Holsters

Explore Four Brothers Inc.'s extensive collection of firearm holsters, crafted for ultimate comfort and concealment. Our top-quality holsters feature durable materials, secure fit, and easy accessibility, sourced from leading brands. Enhance your carry experience with holsters offering adjustable retention, cant, and ride height. Shop now at 4Bros for the best in holsters and carry with confidence.