Sig Sauer P320 Full Size 9mm Police Trade IN Pistols with Night Sights Good Condition
Specs at a glance
About this product
Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Sig Sauer P320 Full Size 9mm Police Trade In Pistols with Night Sights Good Condition is a robust, full-size 9mm pistol known for its modularity. These police trade-ins offer a proven service history and come equipped with night sights. Available now for $499.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Sig Sauer P320 Full Size 9mm Police Trade-In?
| Product Type | Semi-Automatic Pistol |
|---|---|
| Caliber | 9mm Luger |
| Action | Striker-Fired |
| Capacity | 17 Rounds (magazine dependent, may vary) |
| Sights | Night Sights |
| Barrel Length | 4.7 inches |
| Overall Length | 8.0 inches |
| Weight (unloaded) | 29.5 oz |
| Frame Material | Polymer |
| Slide Material | Stainless Steel |
| Finish | Nitron |
| Condition | Good (Police Trade-In) |
| Country of Origin | USA |
| SKU | P320-FULL-9MM-PT-NS |
What are the key features of these Sig Sauer P320 pistols?
These Sig Sauer P320 Full Size 9mm Police Trade In Pistols with Night Sights are a solid choice for someone looking for a reliable, full-size handgun. The P320 platform is well-regarded for its interchangeable fire control unit, allowing users to swap grip modules and slides to customize the pistol to their preferences. Being police trade-ins, these pistols have seen duty use but have been maintained to remain fully functional. The included night sights are a significant advantage, providing better visibility in low-light conditions compared to standard sights. The 9mm chambering is a practical choice, offering a balance of manageable recoil and effective ballistics, with ammunition readily available and generally affordable. The full-size frame provides a comfortable grip for most shooters and contributes to reduced felt recoil, making it suitable for range use, home defense, or as a duty-style sidearm. Each pistol has been inspected to ensure it functions as intended, even with the expected wear and tear of a service weapon. The Nitron finish on the slide offers a degree of corrosion resistance and durability. The modularity of the P320 system means that while these are full-size, the potential for future customization with different grip modules or slide lengths is present, should you wish to modify it down the line. The 17-round capacity is standard for many full-size 9mm pistols, offering ample firepower.
Who should consider buying a Sig Sauer P320 Full Size Police Trade-In?
Buy it if:
- ✅ You are looking for a proven, reliable full-size 9mm pistol at a more accessible price point than a new model.
- ✅ You appreciate the modularity of the Sig Sauer P320 platform and the ability to customize it later.
- ✅ You need a handgun with night sights for improved low-light performance.
- ✅ You are a first-time gun owner seeking a robust, easy-to-shoot full-size pistol for home defense or range practice.
- ✅ You are an experienced shooter who values a pistol with a service history and the character that comes with it.
- ✅ You want a pistol chambered in 9mm, a common and affordable caliber.
Skip it if:
- ❌ You require a brand-new pistol with no signs of prior use. (See our New Firearms for factory-fresh options)
- ❌ You prefer a compact or subcompact pistol for concealed carry. (See our Concealed Carry pistols for smaller options)
- ❌ You are set on a different caliber or a hammer-fired action.
How does the Sig Sauer P320 Full Size compare to other pistols?
| Feature | Sig Sauer P320 Full Size (Police Trade-In) | Glock 17 (Gen3/4 Police Trade-In) | Springfield Armory XD-M Elite Full Size |
|---|---|---|---|
| Material | Polymer Frame, Stainless Steel Slide | Polymer Frame, Steel Slide | Polymer Frame, Forged Steel Slide |
| Quality (Condition) | Good (Service use, minor wear) | Good to Very Good (Service use, minor wear) | New (Factory) |
| Compatibility | Highly modular (interchangeable grip modules, slides, FCU) | Good aftermarket support, some generation-specific parts | Good aftermarket support, specific to XD-M Elite |
| Price | ~$499.00 | ~$400-550 (depending on condition) | ~$600-750 |
| Lifespan/Durability | Proven service life, built to last | Known for extreme durability and longevity | Modern design, expected long service life |
| Shipping | Ships from Kansas Gunshop, Wichita, KS | Varies by seller | Varies by seller |
Frequently Asked Questions about Sig Sauer P320 Police Trade-Ins
What does 'police trade-in' mean?
A 'police trade-in' firearm is a used weapon that was previously issued to and carried by a law enforcement agency. When agencies upgrade their equipment, they often sell their older firearms. These guns typically show signs of holster wear and use but are generally well-maintained mechanically due to agency protocols.
Are these Sig Sauer P320 pistols safe to shoot?
Yes, absolutely. Every police trade-in firearm we receive at Kansas Gunshop undergoes a thorough inspection by our FFL-licensed staff to ensure it is mechanically sound and safe to operate before being offered for sale. We prioritize your safety.
Do these pistols come with magazines?
Typically, police trade-in pistols will come with at least one magazine, and often two. The exact number can vary based on what we receive from our distributors. Please refer to the specific product listing or contact us for current details on magazine count.
What condition are the night sights in?
The condition of night sights on police trade-in firearms can vary. While they are functional and provide low-light visibility, their tritium inserts may have diminished brightness over time compared to brand-new sights. They will still offer an advantage over standard iron sights in dim conditions.
Where can I buy handguns online?
You can purchase handguns, including these Sig Sauer P320 Police Trade-Ins, right here at Kansas Gunshop (kansas-gunshop.com). We facilitate online sales and ship to your local FFL dealer for transfer, adhering to all federal and state regulations.
Is the Sig Sauer P320 modular?
Yes, the Sig Sauer P320 is renowned for its modular design. The serialized component is the internal fire control unit (FCU), which can be easily removed and placed into different grip modules and slides, allowing for significant customization in terms of size, caliber, and ergonomics.
What is the return policy for police trade-in firearms?
We offer a 30-day return policy on our firearms. However, once a firearm has been transferred to you by your local FFL dealer, it cannot be returned. Please inspect the firearm thoroughly at your FFL before completing the transfer. If there are any issues prior to transfer, contact us immediately.
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