Description
When you've got a threaded barrel on your VP40 or USP40, keeping those threads in good shape matters. H&K's thread cap is the factory solution for that. Made from durable steel with a black finish, it screws onto the end of your barrel to protect the threads and crown from dings and damage during transport and storage.
H&K 970173 Thread Cap Design
This cap uses M14.5 x 1 left-hand metric threads, which matches what you'll find on VP40 and USP40 Tactical pistols. The textured surface gives you solid grip for installation and removal, even if you're in a stressful situation or less-than-ideal weather. You're not fumbling around trying to get a slippery cap off when you need to swap it for a suppressor or other muzzle device.
German-Made Quality You Can Count On
H&K manufactures this cap in Germany to the same standards as their firearms. It's a straightforward OEM part that fits right where it should, no guessing about compatibility or fitment. The black steel construction holds up to regular use and will complement the look of your pistol without sticking out.
Protection for Your Investment
Threaded barrels are tougher than non-threaded ones, but the actual threads themselves are still vulnerable. A cap means your barrel stays in shootable condition for years. Whether you're storing your pistol long-term or just switching between different attachments, this keeps the threads pristine.
Key Specifications
- Manufacturer: Heckler & Koch / H&K
- Manufacturer Part Number (MPN): 970173
- UPC: 642230258228
- Caliber: .40 S&W
- Compatible Models: H&K VP40, VP40 Tactical, USP40, USP40 Tactical
- Thread Pitch: M14.5 x 1 Left Hand
- Material: Steel
- Finish: Black
- Country of Origin: Germany
- Surface Type: Textured for grip
What’s Included
- H&K 970173 Thread Cap
Frequently Asked Questions
Will this thread cap fit my HK VP40 or USP40?
Yes, the HK 970173 is designed specifically for VP40, VP40 Tactical, USP40, and USP40 Tactical models with threaded barrels. The M14.5 x 1 left-hand metric threads match the factory barrel threads on these pistols. Make sure your barrel is threaded before ordering.
What's the difference between left-hand and right-hand threads?
Left-hand threads turn counter-clockwise to install and clockwise to remove, which is opposite of what most people are used to. This cap uses left-hand threads to match your HK barrel. When installing, turn it counter-clockwise until snug. Don't force it, and it'll come right off when you turn it clockwise to remove.
Can I use this cap with a suppressor or muzzle device?
The thread cap is meant to protect your threads when you're not using a suppressor or other muzzle device. When you want to attach an accessory, simply unscrew the cap and install your device instead. The cap keeps everything clean and ready for quick swaps.
Is this an official H&K part?
Yes. This is an OEM part manufactured by H&K in Germany to their factory specifications. It's the same thread cap H&K equips on their threaded barrel models, so you're getting the factory-original solution.





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