Silencerco Black Nitride Steel Thread Protector for Firearm Barrels

A barrel thread protector is one of those small accessories that pays for itself the first time you need it. The SilencerCo Black Nitride Steel Thread Protector for Firearm Barrels is a simple, durable solution for preserving the muzzle threads on your rifle or pistol while you're waiting on suppressor paperwork, transporting your firearm, or simply running without a can attached. Protecting threads from dust, debris, and damage is critical—cross-threaded suppressor mounts are expensive and frustrating mistakes that a few dollars' worth of prevention eliminates entirely.

Made from steel with a black nitride finish, this protector is built to handle repeated installation and removal without stripping or corroding. It's offered in two standard thread sizes to match the most common muzzle patterns in the US: .578 X 28 (found on most .45 ACP handguns) and 1/2 X 28 (the de facto standard across most centerfire rifles and many pistols). Installation is straightforward—hand-tighten onto your barrel threads without forcing, and you're done. No tools needed, no permanent modifications.

Whether you're a suppressor owner between Form 4 approvals, a hunter who runs suppressors seasonally, or someone who simply values clean threads and a professional-looking muzzle, this is the kind of thing you'll wonder how you ever did without. It's the small-dollar insurance that keeps your threaded barrel in ready condition for whenever your suppressor is ready to mount.

Key Features

• Steel construction with black nitride finish for durability and corrosion resistance
• Simple hand-tightened installation—no tools or gunsmithing required
• Protects muzzle threads from dust, debris, and damage during storage and transport
• Available in .578 X 28 and 1/2 X 28 thread sizes
• .578 X 28 version compatible with most US-made .45 ACP firearms

Specifications

Frequently Asked Questions

What thread size do I need for my .45 ACP pistol?

Most US-made .45 ACP firearms use the .578 X 28 thread pattern. Verify your barrel's thread pitch before ordering to ensure proper fit.

Can I use this protector while shooting, or is it only for storage?

This protector is designed to keep your threads protected when a suppressor is not mounted. It should be removed before firing your firearm.

How do I install the thread protector?

Hand-tighten the protector onto your barrel's muzzle threads. Do not force it or cross-thread—simply twist it on carefully until snug.

Will this work with my suppressor mount?

No. Remove the thread protector before mounting your suppressor. The protector is meant to protect bare threads when no suppressor is attached.