North Texas runs on 9mm service pistols, and CZ has a brand-new one. The DUTY 4.0 moves CZ's striker-fired line onto a serialized modular chassis: the serial sits on the internal unit, and the fiberglass-reinforced polymer grip frame around it is the modular part. The trigger is a refined SFDA with a factory pull of 5.6 pounds give or take 0.9, a 4 mm reset and 9 mm of travel. Barrel length is 4 inches on every model, slides are cut for direct-mount red dots, and sights are fixed.

Dallas and Fort Worth buyers have four ways to go. The DUTY 4.0 C compact carries 15+1 (17+1 with the extended base plate) and the F full-size 17+1 (19+1 extended). Add MS to either and you get a manual thumb safety. For everyday carry across DFW, the C is the natural pick; for the range in Denton or Arlington, the F gives more grip and more rounds.

Capacity on the short-grip is 15+1, with a 17+1 option through the extended base plate. Height is 135 mm (5.3 in) and the empty weight 770 g (27.2 oz). If you carry, this is the DUTY to look at; if you mostly shoot at the range, see the F.

CZ built the DUTY around a registered chassis that the polymer polymer grip wraps around, the same idea that lets a shooter change frame size without buying a new registered gun. The trigger is a refined SFDA striker unit, 25 ± 4 N (5.6 ± 0.9 lbs) pull, 4 mm (0.16 in) reset, 9 ± 1 mm (0.4 ± 0.04 in) travel. The slide takes optics by direct mounting; CZ's product photos show Holosun, Aimpoint and Shield units in place. Sights are fixed, the 102 mm barrel is not threaded.

MS stands for external safety. This model adds a thumb safety lever to the internal safeties every DUTY has: the firing pin block, the trigger safety and the trigger bar safety. Agencies and shooters who want a positive on/off control choose this version; the trigger itself is unchanged.

Who is it for: daily carry, a home-defense gun that also rides along, and new shooters who want one pistol for everything. If you already shoot a P-10, the DUTY is the next step in the same family, with a new chassis and the optics done right.

Order online and name any licensed dealer near you at checkout, in Dallas, Plano, Arlington, Denton or out in the county; leave it blank and we will find one. The DUTY 4.0 goes to that dealer by insured, tracked carrier and you get tracking when it leaves the warehouse. Parts, optics and ammunition ship straight to your door where Texas law allows.

Questions buyers ask: Does the DUTY 4.0 use P-10 magazines? CZ has not confirmed cross-compatibility with the P-10, so plan on DUTY 4.0 magazines until CZ says otherwise. C or F for everyday carry around DFW? The C is 5.3 inches tall and 27.2 ounces, the F 5.6 inches and 27.5 ounces. Most carry the C; the F is the range and belt-holster gun. What does MS mean on the CZ DUTY 4.0 C MS? Manual safety. It adds a thumb safety lever to the firing pin block, trigger safety and trigger bar safety that every DUTY has.