Sig Sauer P938 9mm Luger 3.50" Threaded Barrel with Protector - Black Steel
Sig Sauer
The Sig Sauer P938 9mm Luger 3" Black Nitride Steel Barrel is a genuine factory replacement barrel built to the same exacting standards as your original—when it's time to rebarrel or you've simply worn out a carry barrel after years of use. At 3 inches long, it maintains the compact profile that makes the P938 one of the most shootable micro-9s on the market. This isn't an off-brand approximation; it's the real deal from the manufacturer who engineered your gun, so fit and function are guaranteed from day one.
The black nitride finish resists corrosion and wear far better than plain steel, a critical feature for a handgun that may spend time in a holster, bag, or truck bed. Sig Sauer factory barrels are specially heat-treated to maximize toughness and durability—they can handle the punishment of thousands of rounds without peening, cracking, or losing accuracy. Whether you're a competitive shooter rotating barrels, a serious carry gun operator, or simply maintaining your P938 for the long haul, this replacement barrel delivers the reliability and longevity you need.
Installation requires basic gunsmithing knowledge or a qualified armorer; this is a precision component, not a quick-swap part like a recoil spring. Once fitted, you'll notice no degradation in the tight tolerances Sig Sauer demands. If your P938 has seen hard use or you're building a second upper configuration, this barrel restores your gun to factory spec and performance.
| Caliber | 9mm Luger |
| Barrel Length | 3 inches |
| Finish | Black Nitride |
| Material | Steel |
| Manufacturer | Sig Sauer |
| Part Number | BBL9389 |
Yes—this is the genuine factory replacement barrel for P938 9mm Luger models. However, professional installation by a qualified gunsmith is recommended to ensure proper fit and function. Do not attempt installation if you lack the tools and experience.
Black nitride provides superior corrosion resistance and is significantly harder than traditional blued finishes, making it more resistant to wear and holster marks. For a carry or duty gun, nitride is the more durable choice.
Barrel installation requires precision tools, gauges, and gunsmithing knowledge to ensure proper headspace and chamber alignment. We recommend having a qualified armorer or gunsmith perform the installation to maintain your warranty and ensure safe function.
You receive the barrel only. Typical installation may require additional components or tools depending on your specific needs; consult your gunsmith or Sig Sauer documentation.