Description
The Tisas PX-9 Gen 3 Duty is a full-size, striker-fired 9mm built around the idea that a working pistol shouldn't cost a fortune to be good. This OD Green model features a threaded barrel for running a suppressor or compensator, a steel slide over a polymer frame, and a 20+1 capacity that feeds from proven SIG P226-pattern magazines. It comes with two mags out of the box, one 18-round and one 20-round, so you've got more than 30 rounds on tap right away.
What really sets the PX-9 apart is the fit. The grip system uses interchangeable backstraps and side panels to create dozens of configurations, which means just about any hand size can find a comfortable, repeatable hold. There are textured index points for your trigger finger and support thumb so your grip lands the same way every time, and an undercut trigger guard lets you choke up high for better recoil control. The flat-faced trigger breaks clean in the mid-4-pound range, and the trigger-blade safety keeps things simple with no slide-mounted lever to fuss with.
Up top you get a Glock-pattern fiber optic front sight for fast pickup and a serrated, drift-adjustable rear, plus a factory RMR-footprint optic cut under a cover plate. That means you can mount popular red dots like the Trijicon RMR, Holosun 407C/507C, and similar models without any gunsmithing. A flared magazine well speeds up reloads, the mag catch is reversible for lefties, and the full-length accessory rail takes a weaponlight or light/laser combo.
This one fits a lot of roles. It's a strong home-defense gun, a fun and accurate range pistol, and a budget-friendly platform for competition once you add an optic. It's especially good for newer shooters who want to learn what grip and sight setup actually works for them without buying three different pistols to find out. Tisas backs it with a lifetime service plan, and the package includes a lockable hard case, IWB holster, loading tool, cleaning kit, grip panel kit, thread protector, and owner's manual.
Key Specifications
- Manufacturer: Tisas
- Model: PX-9 Gen 3 Duty
- Caliber: 9mm Luger
- Action: Striker-Fired (Single Action)
- Barrel Length: 4.6" Threaded (1/2×28 TPI)
- Capacity: 20 + 1
- Magazines Included: Two: (1) 18-round and (1) 20-round, SIG P226 pattern
- Front Sight: Fiber Optic (Glock pattern)
- Rear Sight: Serrated, drift-adjustable (Glock pattern)
- Optic Cut: RMR footprint with cover plate
- Frame: Polymer with interchangeable backstraps and side panels
- Slide/Barrel Material: Steel
- Trigger: Flat-faced with blade safety
- Finish/Color: OD Green
- UPC: 711500175968
- Manufacturer Part Number: 15000128
Frequently Asked Questions
Does the PX-9 Duty come optics ready?
Yes. The slide ships with a factory RMR-footprint cut under a cover plate, so you can direct-mount popular red dots like the Trijicon RMR, Holosun 407C/507C, and others without sending it to a gunsmith. The fiber optic front and serrated rear iron sights work great as a backup or on their own.
What magazines does it use and how many come with it?
It feeds from SIG P226-pattern magazines, which are widely available and proven reliable. The pistol ships with two mags, one 18-round and one 20-round, giving you 20+1 in the gun and more than 30 rounds total right out of the box.
Why is the barrel threaded?
The threaded barrel (1/2×28 TPI) lets you mount a suppressor or compensator if you choose. It ships with a thread protector installed, so if you never run a muzzle device you can leave it covered and shoot it as is.
Will the PX-9 Duty fit my hands?
That's one of its biggest strengths. The grip uses interchangeable backstraps and side panels to create a large number of fit configurations, so shooters with small or large hands can usually dial in a comfortable hold. Textured index points also help you grip the pistol the same way every time.
Is this a good gun for a first-time buyer?
It's a solid choice. The adjustable grip, optic cut, and easy-to-see sights let new shooters figure out what setup works best for them, and the value-friendly price leaves room in the budget for training and practice ammo. Just plan to seat magazines firmly, as some shooters note the flared mag well rewards a confident slap on reloads.




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