Description
The Backup Tactical Skull X is built from firearms-grade aluminum alloy and CNC machined to fit snug on your 1/2×28 threaded barrel. It's the kind of piece that handles serious duty without adding weight or bulk to your carry gun.
Why reach for this thread protector instead of a plain black knurled cap? The skull pattern engraved on the face gives it real character without sacrificing function. You get genuine thread protection plus a look that actually stands out. It's the difference between a generic accessory and something that complements a quality build.
Built for Real Use
Barrel threads take a beating during handling and storage. Nicks and scuffs from transport, holster wear, and basic handling add up fast. This protector keeps your threads clean and undamaged, which matters if you ever need to install a suppressor or muzzle device down the road. It screws on hand-tight with no tools needed, and the design is compact enough not to stick out in a holster or bag.
Thread Compatibility
This protector fits 1/2×28 right-hand threads, which covers most popular 9mm and .22LR pistol barrels. Whether you're running an aftermarket threaded barrel from Backup Tactical or a factory threaded option, the fit is precise enough that it won't rattle or come loose. The black finish matches standard muzzle devices and suppressors, so it looks like part of the kit when installed.
Key Specifications
- Manufacturer: Backup Tactical
- Model: Skull X
- Thread Pattern: 1/2×28 Right Hand
- Material: Firearms Grade Aluminum Alloy
- Finish: Black
- Design: Skull Engraved Pattern
- Compatible Calibers: 9mm, .22LR Pistol
- Construction: Precision CNC Machined
- Weight: Lightweight
- Installation: Hand-Tightened, No Tools Required
- UPC: 855909004556
- Manufacturer Part Number: SKULLX-BLK
What’s Included
- Skull X Thread Protector 1/2×28 Black
Frequently Asked Questions
Will this Skull X thread protector fit my threaded barrel?
This protector is designed for 1/2×28 right-hand threads, which are standard on most 9mm and .22LR pistols with threaded barrels. Check your barrel specs to confirm the thread size and hand direction before ordering. If your barrel is marked 1/2×28 RH, you're good to go.
Do I need any tools or hardware to install it?
Nope. Just screw it on by hand. The threads are machined tight enough that it won't come loose during handling or storage, but loose enough that you can remove it without struggling. No crush washers, o-rings, or special installation required.
Can I use this skull protector with a suppressor or muzzle device?
This protector is designed to protect your threads when you're not running a suppressor or other muzzle device. Once you install a suppressor or comp, you would unscrew this and put it aside. Think of it as storage protection, not something that stays on during shooting.
Is the black finish durable?
The finish holds up well for a protective cap. Like any black coating, it may show handling marks over time, but that doesn't affect function. The aluminum underneath is tough enough to handle normal transport and storage without major wear.




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