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.

This is the longer grip of the two DUTY frames. It holds 17+1 rounds, 19+1 with the extended plate, stands 143 mm (5.6 in) and weighs 780 g (27.7 oz) unloaded. Same slide, same 102 mm barrel as the carry-size, so the sight radius is identical; you buy the F for the grip and the extra rounds.

Under the DUTY name sits a registered modular chassis, a 33 mm (1.3 in) wide fiberglass-reinforced polymer frame, a 102 mm barrel and a trigger CZ rates at 25 ± 4 N (5.6 ± 0.9 lbs) with a 4 mm (0.16 in) reset. The slide is optics-ready by direct mount rather than an adapter plate. Fixed sights come standard, and the barrel is not threaded.

A external safety is the one thing that separates this model from its sibling. It sits beside the three passive safeties, firing pin block, trigger safety and trigger-bar safety, and does not change the trigger pull.

Best fit: home defense, duty use, competition and long range sessions where the extra grip and two more rounds matter. Shooters coming from a CZ 75 will recognize the grip angle; owners coming from any other striker gun will notice the trigger first.

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. Is the CZ DUTY 4.0 F MS the same gun as the F? Yes, apart from the manual thumb safety. Chassis, trigger, slide and the 17+1 capacity are identical.