Glock 43 & 43X MOS IWB Holster

The Glock 43 & 43X IWB Holster is built for responsible carriers who demand a secure, comfortable, and precision fit for daily concealed carry. Designed to fit the Glock 43, 43X, and 43X MOS, this holster delivers reliability and confidence whether you’re carrying on or off duty.

Each holster is engineered using a precision CAD mold, then vacuum-formed from rugged .093" thermoplastic for a consistent, custom fit. Every unit is hand-finished and tested with the actual pistol to ensure smooth draw, proper retention, and dependable performance. Adjustable retention lets you set the draw resistance exactly to your preference.

For further personalization, you can select from multiple belt attachment options, including DCC clips and soft loops. See our guide on how to pick the best belt attachment. You can also customize your setup by choosing the right holster color to match your carry style.

Compatibility

• Fits: Glock 43, 43X, 43X MOS
• Hand Orientation: Right-hand or Left-hand
• Attachment Options: belt attachment options

Product Highlights

• Precision-Molded Fit – CAD-designed and vacuum-formed for the Glock 43/43X lineup
• Adjustable Retention – set the draw tension to your preference
• Full-Height Sweat Guard – shields firearm while maintaining comfort
• Durable Build – .093" thermoplastic construction
• Proudly Made in the USA – Logansport, Indiana

Maintenance Tip

Apply a removable thread locker to all screws after setup to prevent loosening during carry.

Related Products

• Glock 43 IWB Magazine Carrier
• Glock 43 OWB Magazine Carrier
• OWB Glock 43 & 43X Holster

Frequently Asked Questions

Will this holster fit the Glock 43X MOS?

Yes, it’s designed to fit the Glock 43, 43X, and 43X MOS models.

Can I adjust the retention on this holster?

Yes, the retention screws allow you to fine-tune the draw resistance for your preference.

Does this holster work with red dot optics?

Yes, it accommodates most popular red dot sights without interference.

What belt attachments are available?

Options include DCC clips, soft loops, and other secure mounting styles. Learn more in our belt attachment guide.

Is this holster made in the USA?

Yes, all Four Brothers holsters are proudly made in Logansport, Indiana.

• Full Sweat Guard
• Adjustable Retention
• Adjustable Cant
• Profile cut to allow red dot sights
• Open Muzzle for threaded barrels and compensators
• Minimal material and smooth edges
• Made from .093" thermoplastic for durability.
• Optional Modwing includes 2 inserts to allow the user to adjust the amount of leverage placed against the inside of the belt to reduce firearm printing
• Proudly Made in the USA

• Monoblock
• 1 Series Gear Clips
• Ultituck
• Soft Loops 
• RCS Overhooks
• Ulticlip

IWB Belt Attachments Explained

Made in America. Founded, located, engineered, manufactured, and shipped from Northern Indiana.

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