GunsAmerica

Quick Look

Originally developed for the U.S. Army, the Sig P320 M17 is the civilian version of the military's M17 sidearm. Modular and striker-fired, it offers a high degree of customization and reliability. Today, it's a leading choice among law enforcement and civilian shooters seeking duty-grade performance.

Why It's a Top Choice

Fully modular fire control unit platform
Adopted by the U.S. military in 2017
Comes optics-ready with removable rear sight plate
High-capacity magazine for extended shoot time
Flat-face trigger option enhances shooter control

Key Variants

Sig P320 M17

Full-size version modeled after U.S. Army specs, ideal for duty carry and home defense.

Sig P320 M18

Shorter carry model also adopted by military branches, more compact for concealed carry.

P320 Nitron Full-Size

Similar form factor with blacked-out finish and standard sights.

P320 XCarry

XSeries model with enhanced grip module and flat trigger for competition or EDC.

P320 AXG Pro

Alloy grip module and premium features for elite performance and aesthetics.

Competitor Comparison Table

Feature	Sig P320 M17	Glock 17	Smith & Wesson M&P9
MSRP	$649	$599	$629
Capacity	17+1	17+1	17+1
Weight (oz)	29.6	25.1	27.0
Optics-Ready	Yes	No (Gen4), Yes (Gen5 MOS)	Yes
Trigger Type	Striker, flat-face	Striker, curved	Striker, curved
Notable Pro	Modular FCU design	Widespread aftermarket support	Ergonomic grip texture
Notable Con	Heavier than some rivals	No manual safety	Limited modularity

Best Use Cases

Home and self-defense
Law enforcement and duty carry
Military-style training or familiarization
Range practice and skill development
Collectors seeking military-issue series

FAQs

Can I carry the Sig P320 M17 with a manual safety?

Yes, the M17 model includes a factory-installed ambidextrous manual thumb safety.

What is the barrel length of the Sig P320 M17?

The P320 M17 features a 4.7-inch carbon steel barrel, matching the original military spec.

How does the Sig P320 M17 differ from the M18?

The M18 is a more compact version with a shorter slide and barrel (3.9 inches) for better concealment.

SIG P320 M17 for Sale