Hk 970173 Thread Cap 40 Cal Black Steel
The H&K 970173 thread cap for .40 caliber is a straightforward OEM replacement or spare part for shooters running H&K VP40 or USP40 pistols. Manufactured from black steel, this cap threads onto the barrel to protect the muzzle threads when a suppressor or other threaded accessory isn't mounted. If you've lost, damaged, or simply want a backup thread cap for your .40 H&K, this is the factory-correct piece.
Whether you run your VP40 or USP40 suppressed sometimes and bare other times, or you just need to keep threads clean and protected in your range bag, having a quality thread cap on hand makes sense. The black steel construction resists corrosion and blends with the gun's finish.
This is a genuine H&K part—no guessing about fit or finish. If your H&K .40 came with a thread cap and it's gone missing, or if you want a spare, the 970173 is the right replacement.
Key Features
- OEM H&K replacement thread cap for .40 caliber models
- Fits H&K VP40 and USP40 pistols
- Black steel construction for durability and corrosion resistance
- Protects muzzle threads when suppressor or other accessories are not mounted
Specifications
| Brand | H&K (Heckler & Koch) |
| Part Number | 970173 |
| Caliber | .40 S&W |
| Compatible Models | H&K VP40, H&K USP40 |
| Material | Black Steel |
| Type | Muzzle Thread Cap |
Frequently Asked Questions
Will this thread cap fit my H&K VP40 or USP40?
Yes—the H&K 970173 is the OEM thread cap designed specifically for the VP40 and USP40 in .40 caliber. It threads directly onto the barrel.
What's included?
You receive the thread cap itself. This is the cap only; no tools or additional parts are included.
When should I use a muzzle thread cap?
Use it whenever your .40 pistol's threaded barrel is not mounted with a suppressor or other threaded accessory. The cap protects the threads from dirt, moisture, and damage during storage or transport.

