GunsAmerica

Quick Look

The SIG Sauer P320-M17 is the military variant of the P320 series, adopted as the U.S. Army's Modular Handgun System in 2017. It offers a striker-fired design prioritizing modularity and reliability. The P320-M17 remains a popular duty pistol with broad service use and civilian appeal.

Why It's a Top Choice

Fully modular grip and frame for size customization
Striker-fired trigger with consistent performance
High-capacity 17-round magazines standard
Optics-ready slide for red dot compatibility
Widely adopted by military and law enforcement

Key Variants

P320-M17

The standard full-size military configuration favored for duty and service use since 2017.

P320-M18

A compact variant designed for concealed carry and special operations units.

P320 Full Size

Civilian model featuring similar size and ergonomics to the M17, popular for range and home defense.

Competitor Comparison Table

Feature	P320-M17	Glock 19	Smith & Wesson M&P Shield Plus
MSRP	$700	$600	$500
Capacity/Size	17+1, Full-size	15+1, Compact	10+1, Subcompact
Weight	30.4 oz (loaded)	23.65 oz (loaded)	22 oz (loaded)
Optics-Ready	Yes	Aftermarket slides	Limited
Trigger Type	Striker-fired	Striker-fired	Striker-fired
Notable Pro	Military-grade modularity	Proven worldwide reliability	Slim, easy concealment
Notable Con	Heavier than some compacts	No optics-ready models standard	Lower magazine capacity

Best Use Cases

Military and law enforcement duty
Self-defense and home protection
Range training and drills
Concealed carry (compact variants)
Firearms collection and enthusiasts

FAQs

Can I mount a red dot optic on the P320-M17?

Yes, the P320-M17 features a MIL-STD-1913 optics-ready slide designed to accept popular mini red dot sights.

What caliber does the P320-M17 use?

It is chambered in 9x19mm Parabellum, standard for the U.S. military Modular Handgun System.

How does the P320-M17's modularity benefit users?

The fire control unit is removable for easy grip size and caliber changes without tools.

SIG SAUER P320 M17 for Sale