Glock 48 & 48 MOS IWB Holster

This Inside Waistband (IWB) holster is purpose-built for concealed carry of the Glock 48 and Glock 48 MOS, with a comfort-forward length that also works brilliantly for the Glock 43 and 43X by extending past the muzzle to reduce grip tip-out and printing. It’s a confident, everyday solution for responsible owners who want secure retention, discreet concealment, and streamlined draw.

Each holster is engineered from a precision CAD mold, vacuum-formed, hand-finished, and test-fit on the actual pistol. Retention is user-adjustable so you can dial in the exact draw feel you prefer. A mid-height sweat guard balances comfort and access, and every edge is smoothed for all-day wear. 

Choose carry hardware that matches your lifestyle. If you’re unsure, see our guide on belt attachment options. Want to personalize the look? Explore choosing the right holster color. Common attachment choices include DCC clips, soft loops, and claw/wing add-ons for enhanced concealment.

Compatibility

• Fits: Glock 48, Glock 48 MOS; also fits Glock 43, Glock 43X (added length at the muzzle)
• Hand Orientation: Right-hand or Left-hand
• Attachment Options: See belt attachment options
• Not compatible with: weapon-mounted lights/lasers, compensators, or extended/threaded barrels that exceed the holster’s profile.

Product Highlights

• Precision-Molded Fit – CAD-designed mold, vacuum-formed, hand-finished, and pistol-tested
• Adjustable Retention – tune draw tension to your preference
• Full-Height Sweat Guard – comfort and slide coverage; high/low available on request
• Durable Build – .093" thermoplastic with minimal bulk and smooth edges
• Proudly Made in the USA – Four Brothers Holsters, Logansport, Indiana

Maintenance Tip

After setup, apply a removable thread locker to all hardware screws to help prevent loosening during daily carry.

Related Products

• Glock 43X & 48 IWB Magazine Pouch
• Glock 43X & 48 OWB Magazine Pouch
• OWB G48 & G48 MOS Holster

Frequently Asked Questions

Will this IWB holster fit my Glock 43 or 43X?

Yes. It’s designed for the 48/48 MOS and also fits the 43/43X with added muzzle length to improve comfort and reduce printing.

Does this holster work with MOS slides or red dot optics?

It fits the Glock 48 MOS slide profile. Open-top design typically clears most micro red dots; verify your optic height and sights for best results.

What’s the best belt attachment for everyday carry?

Preferences vary. Start with a metal DCC clip for strong belt bite or soft loops for adaptability. See our belt attachment options.

Can I tune the retention and ride feel?

Absolutely. Adjust the retention screws to set draw tension. Add a ModWing/claw to increase concealment pressure against the belt.