The Sig P226 is a masterpiece carried by Navy SEALs. Yet police departments overwhelmingly reject this “expert’s gun” for the utilitarian, mass-produced Glock 17.

The reason boils down to the reality of police training, human physiology under stress, and logistics.

A Sig Sauer P226 pistol.

The Sig P226 is traditionally a Double-Action/Single-Action (DA/SA) pistol. This means the first pull of the trigger is “double-action”: it simultaneously cocks the hammer back and releases it. This requires a long, heavy pull—usually around 10 to 12 pounds of force. However, once the first shot is fired, the slide cycles backward and automatically cocks the hammer for the next shot. Every subsequent trigger pull is “single-action,” requiring only a short, crisp 4.5 pounds of force to release the already-cocked hammer.

For a highly trained operator, this DA/SA system is fantastic. The heavy first pull acts as a deliberate safety measure against accidental discharges during a physical struggle, while the light follow-up pulls allow for rapid, pinpoint accuracy. But mastering that transition from a heavy 10-pound pull to a light 4-pound pull without jerking the gun off target requires thousands of rounds of practice.

The vast majority of police recruits enter the academy with absolutely zero firearms experience. Training them to master the DA/SA transition under the extreme physiological stress of a lethal force encounter is difficult, time-consuming, and expensive. Under stress, fine motor skills degrade. An officer anticipating a heavy trigger pull might flinch or yank the weapon, sending the crucial first shot wide.

A Glock 17 semi-automatic pistol.

Enter the Glock 17.

Unlike the all-metal, hammer-fired P226, the Glock is a striker-fired pistol with a polymer frame. Its defining feature is its “Safe Action” trigger system, which provides a consistent, moderate 5.5-pound trigger pull every single time. There is no heavy first pull and no transition to master. For a firearms instructor tasked with turning a complete novice into a proficient shooter in a matter of weeks, the Glock’s consistency is a massive advantage. Under stress, officers do not have to dedicate cognitive bandwidth to managing different trigger weights; the gun behaves exactly the same way from the first shot to the last.

Beyond training, the Glock excels in the logistical realities of law enforcement:

• Weight: Police officers carry an immense amount of gear on their duty belts, including radios, body cameras, tasers, handcuffs, batons, spare magazines, and body armor. The all-metal P226 weighs significantly more than the polymer Glock 17. On a 12-hour patrol shift, every ounce matters. The lighter Glock reduces fatigue and mitigates long-term strain on an officer’s lower back.
• Maintenance Simplicity: A Sig P226 contains over 60 individual parts and requires careful lubrication to run properly. A Glock 17 has roughly 34 parts. A department armorer can completely disassemble a Glock using a single small punch tool in minutes. They are incredibly forgiving of neglect, grit, and harsh weather.
• Cost: Law enforcement agencies purchase weapons in massive quantities. A new Sig Sauer P226 is significantly more expensive to manufacture, purchase, and maintain than a mass-produced Glock. When outfitting a force of hundreds or thousands of officers, the cost savings of choosing Glock are monumental, allowing departments to reallocate that budget toward ammunition and specialized training.

The Sig Sauer P226 is undoubtedly a phenomenal firearm, and in the hands of a dedicated marksman, it is exceptionally capable. But law enforcement agencies are not outfitting individual experts; they are outfitting entire departments. The Glock 17 dominates the law enforcement market because it provides the perfect intersection of training simplicity, rugged reliability, low weight, and cost-effectiveness.