Thread Protector 1/2 x 28 (9mm & .357SIG Barrel) Knurled in Red

This Thread Protector 1/2 x 28 in a vibrant knurled red finish is a critical, yet often overlooked, piece of gear for any Glock owner running a threaded barrel. Specifically designed for 9mm and .357SIG barrels with the common 1/2×28 thread pitch, its primary job is to protect those precise threads from impact damage, debris, and corrosion when a muzzle device like a compensator or suppressor isn’t mounted. Beyond pure protection, the bold red knurling provides a sharp visual accent and offers a positive grip for hand-tightening. Every responsible gun owner who invests in a threaded barrel needs a reliable thread protector, and this one from Miami Shooters Supply delivers with fast shipping to get it on your firearm.

Key Features

• Precision machined with a 1/2×28 thread pitch to match standard 9mm and .357SIG threaded barrels.
• Aggressive knurling around the circumference ensures a secure grip for installation and removal, even with gloves on.
• Anodized red finish provides durable corrosion resistance and a distinctive, high-visibility look on your Glock.
• Keeps barrel threads clean and undamaged from dirt, carbon buildup, and accidental impacts during transport or storage.
• Maintains a sleek, finished appearance on your handgun when shooting without a larger muzzle device attached.

Built For

This protector is built for the Glock owner who values both function and a personalized touch. It’s ideal for shooters who alternate between suppressed and unsuppressed shooting, or for those who run a threaded barrel but don’t always keep a compensator mounted. The red knurl is for the enthusiast who appreciates a pop of color and easy identification in their range bag.

Specifications

• Thread Pitch: 1/2″ x 28 TPI
• Caliber Compatibility: Designed for 9mm & .357SIG barrels
• Material: 6061 Aluminum with Type III Hard Anodized Finish
• Finish: Red
• Design: Knurled exterior for grip, internal threads

FAQ

Will this thread protector work on my Glock 19 Gen 5 with a factory threaded barrel?
Yes. If your factory or aftermarket Glock barrel for 9mm or .357SIG is threaded 1/2×28, this protector is designed to fit it perfectly.

Is it easy to install?
Extremely. Simply hand-tighten the knurled thread protector onto your clean barrel threads until it is snug. Avoid using tools, as over-tightening can make it difficult to remove later.