The Zenith Firearms ZF-5T is a semi-automatic 9mm Luger pistol with a roller-delayed blowback action, a 5-inch threaded barrel with 3-lug mounting, and a 30-round magazine. It weighs 4.5 lbs with a matte black finish and polymer grips. A soft carry case is included. 
 

Key Specifications 

• Manufacturer: Zenith Firearms 
• Model: ZF-5T 
• Action Type: Semi-Automatic 
• Caliber: 9MM Luger (9x19 Para) 
• Barrel Length: 5 inches 
• Capacity: 30 rounds 
• Weight: 4.5 lbs. 
• Finish Color: Black (Matte) 
• Safety Style: Manual (Thumb Safety) 
• Sights: Adjustable Sights 
• Grips Material: Polymer 
• Accessories Included: Soft Carry Case 
   

Features 

The roller-delayed blowback system reduces the felt impulse compared to a straight blowback design, which matters at 9mm velocities through a 5-inch barrel. The threaded barrel accepts suppressors or muzzle devices directly, and the 3-lug mount gives an additional interface option for dedicated suppressor hosts. Adjustable sights let you zero for your preferred load. The manual thumb safety is on the left side and operates with a positive detent. 
 
At 4.5 lbs the ZF-5T is heavier than a typical handgun — this is a pistol-caliber carbine-class firearm in pistol form, and the weight reflects that. The 30-round magazine gives extended shooting without reloads.

The Zenith ZF-5T draws a consistent audience of HK MP5-style enthusiasts, and feedback reflects that context.

Most owners are buying the ZF-5T specifically for the roller-delayed blowback action and the MP5 lineage. Zenith manufactures these on Mkek machinery with parts and licensing tied to the original design, which gets regular positive mention. The operating feel — the distinct roller-delayed cycling — is what this gun is about, and owners who came from other 9mm pistols note it immediately.

Build quality is praised consistently. The metal construction feels substantial and the fit of components is tight. The threaded barrel and 3-lug are appreciated by owners who want to run a suppressor, since the platform supports both mount types.

Weight is the most common friction. At 4.5 lbs it's significantly heavier than most compact or full-size 9mm pistols. Owners who want this as a range gun or suppressor host accept the weight; those looking for a practical carry gun find it impractical.

Size also comes up — the pistol format with a 30-round magazine is bulky and not suited to holster carry. Most owners use it as a bench or range gun or with a brace where legal.

Price is noted as high relative to standard pistols. Buyers who understand the roller-delayed action and MP5 connection conclude the cost is justified; those comparing it to conventional 9mm pistols by capacity and weight find it harder to rationalize.