Hornady Critical Duty 9mm 135 Grain FlexLock is purpose-built defensive ammunition engineered for law enforcement professionals and serious civilian carriers who need reliable, consistent performance through real-world barriers and in full-size service pistols.
- 135-grain FlexLock bullet delivers barrier-blind terminal performance on demand
- Flex Tip initiates expansion even through heavy clothing and intermediate barriers
- InterLock band keeps bullet and core together for maximum retained weight
- Optimized for full-size duty pistols with longer barrel lengths
- 1,010 fps muzzle velocity balances penetration depth with controlled expansion
- 25 rounds per box — ideal for range qualification and duty carry stocking
Who This Is For
Hornady Critical Duty 9mm 135gr is the go-to choice for law enforcement officers, armed security professionals, and responsible civilian carriers who rely on a full-size or compact service pistol for personal protection. It's equally well-suited for those who train with duty ammo to ensure their range performance mirrors real-world reliability.
Specifications
| Brand | Hornady |
|---|---|
| Product Line | Critical Duty |
| Caliber | 9mm Luger (9x19) |
| Bullet Weight | 135 Grain |
| Bullet Type | FlexLock Hollow Point |
| Muzzle Velocity | 1,010 fps |
| Muzzle Energy | 306 ft-lbs |
| Rounds Per Box | 25 |
| Casing | Nickel-Plated Brass |
| Primer | Boxer, Non-Corrosive |
| Application | Personal Defense / Duty Carry |
| Part Number | 90236 |
Frequently Asked Questions
What makes Hornady FlexLock different from standard hollow point bullets?
The FlexLock bullet features Hornady's patented Flex Tip technology — a soft polymer tip seated inside the hollow point cavity that initiates reliable expansion even after passing through heavy denim, auto glass, sheet metal, wallboard, and other common urban barriers. Unlike traditional hollow points that can plug and fail to expand after barrier penetration, the FlexLock's tip presses inward on impact to trigger consistent, controlled expansion. The InterLock band mechanically locks the jacket to the lead core, ensuring the bullet stays together and retains maximum weight for deeper, more reliable penetration.
Is the 135gr Critical Duty load better suited for full-size or compact pistols?
Hornady engineered the 135gr Critical Duty specifically for full-size service pistols with longer barrel lengths (typically 4–5 inches), where the powder charge has enough dwell time to reach its optimal velocity of 1,010 fps. If you're carrying a compact or subcompact 9mm with a shorter barrel, Hornady offers the Critical Duty +P 135gr variant or their Critical Defense line, which are better optimized for shorter barrels. Always verify your pistol's compatibility and consult the manufacturer's recommendations for +P ammunition if considering that option.
Can I use Critical Duty ammunition for range practice as well as carry?
Yes — many professionals and serious shooters train with their actual carry load to ensure complete familiarity with recoil characteristics, point of impact, and feeding reliability. Hornady Critical Duty is loaded to consistent, tight tolerances that mirror duty-carry performance, making it an excellent training round. However, because premium defensive ammunition costs more per round than bulk FMJ practice ammo, a common approach is to conduct the majority of range work with comparable-weight FMJ loads and periodically confirm zero and function with your actual carry rounds.
- Caliber:
- 9MM
- Bullet Weight:
- 135 GR
- BulletType:
- FlexLock Duty
- Type:
- Pistol Ammunition
- Box Quantity:
- 25
- Case Quantity:
- 250
- Lead Free:
- No