Glock 19/45 with TLR-8A IWB Holster

Glock 19 & Glock 45 IWB Holster – Streamlight TLR-8 Series

This inside-the-waistband (IWB) holster is designed to fit the Glock 19 Gen 5, Gen 6 and Gen V, Glock 45, and Glock 19X when equipped with a compatible Streamlight TLR-8 series weapon-mounted light. It is optimized for concealed carry, providing consistent light-based retention, adjustable fit, and a slim profile to reduce printing.

Important: Retention is achieved on the weapon light itself, not the pistol. This holster will not function properly without a compatible TLR-8 series light mounted to the firearm.

Compatible Firearms

• Glock 19 Gen 5, Gen 6 & Gen V
• Glock 45 (Gen 5 & Gen 6)
• Glock 19X

Required Weapon Light Compatibility

To ensure proper fit and function, this holster requires one of the following Streamlight TLR-8 models:

• Streamlight TLR-8A (old) or TLR-8X – Part #69414
• Streamlight TLR-8A G (old) or TLR-8X G – Part #69434

Precision Construction & Fit

Each holster is vacuum-formed using a precision-machined mold created from a CAD model of the actual firearm and light combination. All forming, trimming, and folding is completed in-house for consistent quality and repeatable fit.

Final fit and function testing is performed using the actual pistol and light to ensure proper retention, smooth draw, and reliable performance.

Retention is user-adjustable, allowing you to fine-tune draw resistance to match your personal carry preference.

Key Features

• Designed for Glock 19 Gen 5, Gen 6 & Gen V, Glock 45, and Glock 19X with Streamlight TLR-8 lights
• Inside-the-waistband (IWB) concealed carry configuration
• Light-bearing design with retention on the weapon light
• Full sweat guard for comfort and slide protection
• Adjustable retention
• Minimal material with smooth edges to reduce printing
• Optional ModWing with two inserts to fine-tune concealment leverage
• Constructed from durable .093" thermoplastic
• Fit and function verified with the actual firearm and light before shipment
• Proudly made in the USA

Belt Attachment Options

Learn more about IWB belt clips and attachment options in our guide:

Inside Waistband Belt Attachments Explained

Compatible Magazine Pouches

Complete your concealed carry setup with compatible Glock magazine carriers:

• Glock 9mm / .40 IWB Magazine Pouch
• Double Stack 9mm / .40 IWB Magazine Pouch
• Glock 9mm / .40 OWB Magazine Pouch

Holster Color Options

Not sure which finish fits your setup? Our holster color guide shows available color options and real-world examples.

Frequently Asked Questions

Will this holster work without a weapon light installed?

No. Retention is based on the Streamlight TLR-8 series light. The holster will not retain the firearm properly without a compatible light mounted.

Which Glock models does this holster fit?

This holster fits the Glock 19 Gen 5, Gen 6 & Gen V, Glock 45, and Glock 19X when paired with a compatible Streamlight TLR-8 series light.

Is retention adjustable?

Yes. Retention is user-adjustable to match your preferred draw resistance.

Where is this holster made?

All Four Brothers holsters are proudly made in the USA.

Installation Tip: We strongly recommend applying a removable thread locker to each screw after setup to help prevent hardware from loosening during daily carry.

Full Sweat Guard
Adjustable Retention
Minimal material and smooth edges
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
Made from .093" thermoplastic for durability.
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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