The modern duty pistol balances modularity, reliability, and ergonomics for professional users and informed civilians alike. A platform born from a military competition, this handgun brings practical design choices and field-proven features to shooters looking for a service-grade 9mm with upgrade paths for optics and suppressors.

SIG SAUER M17 (P320)

Platform and modular design

The SIG SAUER M17 (P320) is a modified P320 submitted for the XM17 Modular Handgun System. Its serialized stainless steel chassis enables a modular approach while the use of spanner screws prevents full disassembly beyond field stripping by non-armorer users—an intentional security feature. The full-size M17 uses a 120 mm (4.7 in) barrel while the carry M18 runs a 98 mm (3.9 in) barrel, giving buyers clear choices depending on duty or everyday carry priorities. Standard magazine capacity is 17 rounds, with an optional 21-round extended magazine available.

Field-oriented features and durability

Every M17 is built with practical, soldier-focused updates: an ambidextrous thumb safety, a loaded chamber indicator, an improved slide sub-assembly that captures small components when disassembled, and an improved trigger “mud flap” to prevent debris ingress. Steel components receive a PVD corrosion-resistant finish, increasing longevity under harsh conditions. The slide is cut to accept reflex sights from the RX Series, and the Modular Handgun System includes self-illuminating tritium sights for low-light work plus an integrated accessory rail and an Army-standard suppressor conversion kit.

View product details and pricing to see full specifications and accessories; the listed price is $559.99, and clicking will take you to the shop page where the retail purchase is completed through the retailer.

Accuracy, testing, and user maintenance

SIG conducts a 13-round test fire for each M17 leaving the factory—three rounds to break in the weapon and ten for an accuracy check. The improved slide sub-assembly and PVD finish reduce maintenance headaches, while spanner screws limit improper disassembly. The reflex-ready slide and accessible controls make optics co-witnessing and rapid target acquisition straightforward for trained shooters.

For those seeking a modular 9mm with direct military lineage, integrated low-light sights, optics-ready capability, and a duty-grade parts finish, the SIG SAUER M17 (P320) is a focused choice. Check availability and purchase options on the product page to evaluate accessories and fitment for your mission or defensive needs: Shop this product.

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