Show-Me State buyers have a new CZ to look at this fall. The DUTY 4.0 is a striker-fired 9x19mm with a serialized internal chassis, a fiberglass-reinforced polymer frame and a direct-mount optics-ready slide with fixed sights. The 4-inch barrel is not threaded, overall length is 7.4 inches, and the SFDA trigger comes in at 5.6 pounds with a 4 mm reset and 9 mm of travel.

Buyers on the Kansas City side, in Liberty and St. Joseph, tend to ask for a carry gun, and the C compact at 15+1, 770 g and 135 mm tall fits that. Around St. Louis, Chesterfield and St. Charles, and in Columbia and Jefferson City, home defense comes up more, and the F full-size at 17+1 is the better nightstand pistol. Add MS to either and you get a manual thumb safety. All four carry a $729 MSRP, and with the extended base plate the C goes to 17+1 and the F to 19+1.

The C is the carry-size frame. It stands 135 mm (5.3 in) tall, weighs 770 g (27.2 oz) with an empty magazine and carries 15+1 rounds of 9mm, or 17+1 once the extended base plate is fitted. Short enough to hide under a shirt, long enough to get every finger on the grip.

This version has no external safety lever. It relies on three passive 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.

What is new under the slide is the registered modular chassis. The serial number lives on the internal chassis, not on the polymer grip, so the polymer grip is a part you can change while the gun stays the same gun. Around it CZ put a reworked SFDA striker trigger, rated at 25 ± 4 N (5.6 ± 0.9 lbs) with a 4 mm (0.16 in) reset and 9 ± 1 mm (0.4 ± 0.04 in) of travel, and a slide cut for direct-mount optics. CZ's own photos show it wearing Holosun, Aimpoint and Shield red dots.

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: concealed carry where your state allows it, home defense, and range time that does not need a full-size grip.

Choose your model and name the Missouri dealer you want it shipped to. Missouri has no purchase permit and no waiting period; your dealer runs the NICS check at pickup and you take the pistol home once it clears. Ammo, optics and parts ship to your door. Price and stock are checked live when you order and before you pay.

Questions buyers ask: Is there a waiting period on handguns in Missouri? No. Missouri has no purchase permit and no waiting period; your dealer runs the NICS check when you collect. What do the extended base plates add? Two rounds. The C goes from 15+1 to 17+1 and the F from 17+1 to 19+1. 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.