| 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 |
Specifications
| Caliber | .40 |