GunsAmerica

Quick Look

The M17 is the military designation for the SIG Sauer P320, adopted by the U.S. Army in 2017. It features a modular design focused on adaptability and ease of maintenance. Currently, it is a popular service pistol widely used by U.S. forces and law enforcement agencies.

Why It's a Top Choice

Modular frame allows caliber and size changes
High reliability under combat conditions
Striker-fired trigger with consistent pull
Ample aftermarket parts and accessories
Used by U.S. military branches and allies

Key Variants

M17 — Full-size duty pistol designed for military use and service members.

M18 — Compact version tailored for concealed carry and support roles.

P320 — Civilian and law enforcement counterpart with modular adaptability.

Competitor Comparison Table

Feature	M17	Glock 17	Smith & Wesson M&P 9
MSRP	$600–750	$500–650	$500–700
Capacity/Size	17+1 rounds, full size	17+1 rounds, full size	17+1 rounds, full size
Weight	29 oz (unloaded)	22 oz (unloaded)	25.6 oz (unloaded)
Optics-ready	Yes, slide cut for optics	Limited models only	Some models optics-ready
Trigger Type	Striker-fired	Striker-fired	Striker-fired
Notable Pro	Modular chassis allows easy caliber swaps	Widely field-proven and reliable platform	Ergonomic grip and smooth trigger pull
Notable Con	Heavier than many competitors	Limited modularity options	Slightly bulkier frame

Best Use Cases

Military and law enforcement duty use
Home defense and concealed carry (compact variant)
Range training and marksmanship practice
Personal collection for modular pistols

FAQs

Can I swap calibers on the M17?

Yes, the M17's modular chassis supports caliber conversions such as 9mm to .40 S&W with corresponding barrel and slide kits.

What trigger type does the M17 use?

The M17 features a striker-fired trigger system with a consistent pull weight around 5.5 pounds for reliable performance.

How does the M17 compare in weight to similar pistols?

The M17 weighs about 29 ounces unloaded, heavier than Glock 17 and Smith & Wesson M&P 9 due to its modular steel chassis.

M17 for Sale