The .40 S&W was developed as a compromise between the 9mm and .45 ACP, offering more energy than the 9mm with higher capacity than the .45. While many law enforcement agencies have transitioned back to 9mm, the .40 S&W remains popular among shooters who want more power than 9mm in a compact platform.
Primary uses: law enforcement, self-defense, competition.
When shopping for .40 S&W firearms and ammunition, consider factors such as barrel length, bullet weight, velocity, and intended application. Modern .40 S&W loads offer excellent performance across self-defense, target shooting, and hunting scenarios. Ammunition selection matters as much as the platform: match bullet weight and load type to your primary use, and test several loads for reliability and accuracy in your specific firearm.
WeaponDepot offers the largest selection of .40 S&W firearms and ammunition from verified sellers across all 50 states. All firearm purchases ship to a licensed FFL dealer near you for a safe, legal transfer. WeaponDepot charges just 2.5% — the lowest marketplace fee in the industry.
Filter by price, condition, brand, and more to find the perfect .40 S&W firearm or ammunition at the best price.