| Beefy, high-tolerance bolt engineered for heavy-hitting pistol calibers. Proudly Made in the USA. |
.40 S&W / 10mm Nitride AR Bolt for Pistol-Caliber Builds
The WLA-BCG-3017 is a nitride-treated bolt engineered for AR-platform pistol-caliber builds chambered in .40 S&W and 10mm Auto. Both cartridges place distinct mechanical demands on a bolt, and this heavy-duty unit is made to manage the operating pressures and cycling characteristics those rounds generate. The nitride finish provides a hardened, low-friction surface that supports corrosion resistance and easier cleaning. It is American-made and held to mil-spec tolerances.
This bolt suits dedicated pistol-caliber carbine projects and serves as an upgrade path for builders moving an existing lower toward a more robust bolt assembly. Running a different chambering? Compare the 9mm AR Bolt Nitride and the .45 ACP AR Bolt Nitride to match your build.
Pistol-caliber requirements vary, so verify compatibility with your upper receiver, barrel extension, and feed setup before purchasing. Pair your assembly with a fresh AR15 Cam Pin in Nitride for a complete bolt package.
Specifications
| Caliber | .40 S&W / 10mm Auto |
| Model | WLA-BCG-3017 |
| Bolt Material | 8620 steel, single-piece bolt |
| Finish | Black nitride |
| Extractor | Heat-treated AR15-style extractor |
| Firing Pin | 17-4 stainless steel firing pin with spring |
| Tolerances | Mil-spec |
| Compatibility | All AR15-style PCC systems, including Colt-style and Glock-style magazine platforms |
| Full Auto Compatible | Yes |
| Country of Origin | Made in the USA |
Frequently Asked Questions
The WLA-BCG-3017 is engineered for AR-platform pistol-caliber builds chambered in .40 S&W and 10mm Auto. It's built to manage the operating pressures and cycling characteristics both cartridges generate. Verify compatibility with your specific upper receiver, barrel extension, and feed setup before purchasing.
It's a single-piece bolt machined from 8620 steel with a black nitride finish. The nitride treatment provides a hardened, low-friction surface that supports corrosion resistance and easier cleaning. It's made in the USA and held to mil-spec tolerances.
Yes. The listed compatibility covers all AR15-style PCC systems, including Colt-style and Glock-style magazine platforms. Pistol-caliber requirements vary, so confirm your build's spec against your upper receiver, barrel extension, and feed setup before ordering.
The bolt includes a heat-treated AR15-style extractor and a 17-4 stainless steel firing pin with spring. To complete your bolt package, pair it with a fresh AR15 Cam Pin in Nitride.
Yes. If you're running a different chambering, compare the 9mm AR Bolt Nitride and the .45 ACP AR Bolt Nitride to match your build. Each is nitride-treated and built for its respective pistol-caliber platform.
Orders ship in 2-3 business days. Free shipping is available on qualifying orders. Every purchase is backed by a 30-day money-back guarantee. If you have questions about this bolt before ordering, reach out through the Contact Us page.
Specifications
| Caliber | .40 |