HORNADY - 40 S&W - 175 GR - FLEXLOCK DUTY - 20 RDS/BOX

The Hornady FlexLock bullet combines two key technologies: a Flex Tip insert that prevents the hollow point cavity from clogging with barrier material, and a patented InterLock band that mechanically locks the bullet jacket to the lead core. Together, these features ensure the bullet expands reliably and retains its weight even after passing through tough intermediate barriers like auto glass, plywood, drywall, and heavy clothing — conditions where conventional hollow points often fail to expand or lose significant mass.

Hornady specifically engineered Critical Duty for full-size duty handguns with longer barrel lengths, which help the 175-grain projectile reach its designed velocity of 1,010 fps. For compact or subcompact pistols, Hornady offers Critical Defense, which is optimized for shorter barrels. Using Critical Duty in a full-size platform like a Glock 22, Smith & Wesson M&P40, or Sig Sauer P229 ensures you get the intended ballistic performance and FBI-protocol penetration depth.

Store Hornady Critical Duty ammunition in a cool, dry location away from direct sunlight, extreme heat, and high humidity. The nickel-plated brass cases offer additional corrosion resistance compared to standard brass, making them well-suited for carry duty where the rounds may be exposed to sweat and moisture. When stored properly, quality centerfire pistol ammunition like this can remain reliable for 10 years or more. Always inspect rounds for signs of corrosion or damage before use, and rotate your carry ammunition periodically as a best practice.