The True Precision Black Nitride Threaded Barrel for Glock 48 is a drop-in upgrade for shooters looking to add suppressor capability or a muzzle brake to their carry or range gun. This 4.68" barrel ships with a Viton high-heat integral O-ring lock thread protector and threads in at 1/2x28, the standard for 9mm suppressors and accessories. Installation is straightforward—it's designed as a simple drop-in replacement—and it's manufactured entirely in the USA from 416R stainless steel.

What sets True Precision barrels apart is their proprietary broach cut rifling design, engineered specifically for tighter tolerances and improved accuracy potential right out of the box. The 6-groove rifling runs at 1/10 RH twist and is safe for all ammunition types, including cast lead rounds—a big advantage if you reload or shoot budget-friendly lead projectiles. The crown and chamber work meet SAAMI spec, and the barrel features refined geometry throughout: added chamfers, improved radius cuts, and tighter overall fit than stock Glock barrels, all contributing to more consistent performance at the range.

The black nitride finish is durable and corrosion-resistant, holding up to frequent use and cleaning. Whether you're suppressing your Glock 48 for reduced noise, adding a muzzle brake for faster follow-up shots, or simply upgrading to a more precise barrel for target work, this True Precision option delivers Made-in-USA quality without the factory compromises.

Key Features

• Drop-in design for easy installation—no gunsmithing required
• 1/2x28 threaded muzzle for suppressors, brakes, and other accessories
• Includes Viton high-heat integral O-ring lock thread protector
• Advanced proprietary broach cut rifling engineered for improved accuracy
• Safe for all ammunition types, including cast lead
• 100% USA-designed and manufactured from 416R stainless steel
• Refined geometry with added chamfers and improved radii over OEM
• SAAMI spec chamber and 9mm 1/10 RH twist
• Black nitride finish for durability and corrosion resistance

Specifications

Brand	True Precision
Firearm	Glock 48
Caliber	9mm
Barrel Length	4.68" (breechface to muzzle, without thread protector)
Rifling	6-groove, 1/10 RH twist
Thread Pattern	1/2x28
Material	416R stainless steel (USA sourced)
Finish	Black nitride
Includes	Viton high-heat integral O-ring lock thread protector
Chamber	SAAMI spec
Installation	Drop-in design
Ammunition Compatibility	All types, including cast lead

Frequently Asked Questions

Will this barrel work with suppressors and muzzle brakes?

Yes. The 1/2x28 thread pattern is the standard for 9mm suppressors and most muzzle brakes. The barrel ships with a Viton high-heat integral O-ring lock thread protector to cover the threads when not in use.

How difficult is installation?

Very straightforward. This is a drop-in design—no gunsmithing, special tools, or modification of the Glock 48 frame is required. Simply remove the factory barrel and replace it with this True Precision unit.

Can I shoot cast lead ammunition through this barrel?

Yes. The 6-groove rifling design is safe for all ammunition types, including cast lead projectiles, so you can shoot cheaper reloaded rounds without concern.

How does this barrel compare to the factory Glock 48 barrel?

True Precision engineered a proprietary broach cut rifling design specifically for improved accuracy potential. The barrel also features refined geometry throughout—added chamfers, improved radius cuts, and tighter overall fit—delivering performance that exceeds factory Glock specifications while maintaining 100% drop-in compatibility.