Glock 45 OEM Threaded Barrel

Upgrade your Glock 45 with a genuine OEM threaded barrel built for duty-grade reliability, accuracy, and suppressor or compensator compatibility. Glock manufactures this barrel to exact factory specifications, delivering consistent lockup, smooth feeding, and dependable cycling for range, duty, or defensive use.

Product Description | Specs for Glock 45 OEM Threaded Barrel

Glock manufactures the Glock 45 Threaded Barrel from high-strength steel and finishes it with Glock’s durable nDLC coating for excellent wear and corrosion resistance. This barrel drops directly into Glock 45 slides and features Glock Marksman Barrel (GMB) rifling with optimized chamber geometry to maintain accuracy and reliability when running factory-spec ammunition—whether suppressed or unsuppressed.

A factory-threaded muzzle (1/2×28) accepts common suppressors, compensators, and other muzzle devices while preserving OEM performance.

What’s Included For Glock 45 Threaded Barrel

A standard Glock 45 threaded barrel package includes:

• Glock 45 OEM threaded barrel
• Factory thread protector

(Package contents may vary by supplier. Always verify before purchase.)

Specifications

• Model: Glock 45 OEM Threaded Barrel
• Manufacturer: Glock (OEM)
• Material: Glock proprietary steel alloy
• Finish: nDLC (nitride-treated)
• Caliber: 9mm Luger
• Thread Pitch: 1/2×28 (RH)
• Rifling: Glock Marksman Barrel (GMB) rifling
• Compatibility: Glock 45 Gen 5 slides and frames
• Length: Extended, factory-threaded (G19-length profile)

How to Install a Glock 45 Threaded Barrel

Install the Barrel

• Confirm the pistol is unloaded and clear
• Remove the slide from the frame
• Remove the recoil spring assembly
• Remove the existing barrel
• Install the OEM threaded barrel
• Reinstall the recoil spring and attach the slide to the frame

Function Check

• Rack the slide to confirm smooth movement
• Check proper lockup and trigger reset with a dry-function test
• Install the thread protector when not using a muzzle device

How To Disable a Glock 45 with an OEM Threaded Barrel

1. Remove the slide assembly and store it separately
2. Remove all magazines and store them separately
3. Secure the frame with a cable lock or trigger lock
4. Store ammunition separately
5. Lock all components in a secure container or safe

For permanent disabling or compliance requirements, consult a licensed gunsmith or FFL.

Compatibility

• Fits: Glock 45 Gen 5 pistols
• Threads: 1/2×28 suppressors, compensators, and muzzle devices
• Ammunition: 9mm Luger (factory-spec recommended)
• Gen Mix: Designed for Gen 5 Glock 45; verify fit for other models or slides

What’s the Glock 45 OEM Threaded Barrel Made Of?

Glock machines this barrel from its proprietary steel alloy and applies a factory nDLC finish to improve hardness, wear resistance, and corrosion protection. Glock Marksman rifling enhances accuracy and consistency while maintaining long barrel life with jacketed ammunition.

Customization Options

• Muzzle Devices: Suppressors, compensators, or blast shields
• Recoil System: OEM recoil spring assembly or tuned springs for compensators
• Thread Protection: Use the factory thread protector when unsuppressed

Note: Suppressor use requires a compatible booster (Nielsen device).

FAQs

Q: Is this a genuine Glock OEM barrel?
Yes. Glock manufactures this barrel to OEM specifications for the Glock 45.

Q: Is this barrel threaded?
Yes. It features factory 1/2×28 threads.

Q: Does this barrel require fitting?
No. It installs as a direct drop-in replacement.

Q: Can I run a suppressor with this barrel?
Yes. Use a compatible suppressor with a booster for reliable cycling.

Q: Will this barrel fit other Glock generations?
Glock designs this barrel specifically for the Gen 5 Glock 45. Verify compatibility before installing in other models.

DISCLAIMER

OEMGlockParts.com provides aftermarket and compatible parts and components for GLOCK pistols. We operate independently and do not represent, endorse or have any connection with GLOCK, Inc. or GLOCK Ges.m.b.H.

GLOCK, Inc. and GLOCK Ges.m.b.H own the trademark “GLOCK” and other related marks. We mention “GLOCK” only to identify parts and products that fit or work with GLOCK pistols.