Big Sky Country is rifle country, but a 9mm service pistol rides in a lot of trucks between Missoula and Livingston, and CZ's new DUTY 4.0 is a strong one. It is CZ's new-generation striker-fired 9x19, built around a serialized internal chassis so the fiberglass-reinforced polymer grip frame is modular. The slide mounts a red dot directly, with fixed sights as backup, and the barrel is 4 inches, unthreaded.

You can have it two ways, each with or without a manual thumb safety (MS). The DUTY 4.0 C, the compact, carries 15+1 standard and 17+1 with the extended base plate at 770 g and 135 mm tall; it suits Bozeman and Kalispell shooters who carry in the hills. The DUTY 4.0 F, full-size, carries 17+1 (19+1 extended) at 780 g and 143 mm, the better choice for the ranch house in Hamilton, Dillon or out past Butte and Anaconda. CZ's refined SFDA trigger runs 5.6±0.9 lbs with 9±1 mm of travel and a 4 mm reset. New release, $729 MSRP.

Compact means 15+1 rounds in a frame 135 mm (5.3 in) high. Fit the extended base plate and it holds 17+1. At 770 g (27.2 oz) unloaded it sits between a pocket pistol and a full-size gun, which is exactly where a carry-and-home-defense 9mm belongs.

Where the P-10 had a registered polymer frame, the DUTY 4.0 moves the serial number to an internal modular chassis. That is the headline. The rest follows the modern service-pistol formula done carefully: a striker SFDA trigger at 25 ± 4 N (5.6 ± 0.9 lbs) (4 mm (0.16 in) reset, 9 ± 1 mm (0.4 ± 0.04 in) travel), a 188 mm (7.4 in) long slide with direct-mount optics cuts, fixed sights and a four-inch barrel without a thread.

This version has no external safety lever. It relies on three automatic safeties, firing pin block, trigger safety and trigger-bar safety, and the trigger is the same as on the MS model. Shooters who prefer a lever should pick the MS.

The CZ DUTY 4.0 C suits anyone who wants a modern optics-ready 9mm with CZ's grip and a trigger that is better than the class average: daily carry, a home-defense gun that also rides along, and new shooters who want one pistol for everything.

Order online and pay at checkout. Name any licensed Montana dealer near you, in Billings, Missoula, Havre or anywhere else; leave it blank and we will find one. The DUTY 4.0 goes dealer to dealer, and you get tracking when it leaves the warehouse. Your Montana dealer handles the background check and the state's rules at pickup. Ammunition, optics and parts ship straight to your door where the law allows.

Questions buyers ask: What if I do not know a dealer near me in Montana? Leave the dealer field blank at checkout and we will find a licensed Montana dealer for you. The pistol ships to them and you collect it there. Is the DUTY 4.0 a good truck gun for Montana? At 188 mm long, 33 mm wide and under 800 g, with 15 to 19 rounds depending on model and base plate, it is a full-use 9mm that rides easily in a console or on the hip. Does the CZ DUTY 4.0 C take CZ P-10 magazines? CZ lists the DUTY with its own 15-round magazine and an extended base plate for 17+1. P-10 magazine fit is not confirmed, so plan on DUTY magazines.