Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms for defense, sport, and hunting. The Mossberg New Haven 600AT 12 Gauge Police Trade-In is a robust, field-proven pump-action shotgun. Its history of police service suggests reliability under demanding conditions. 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 Mossberg New Haven 600AT?
| Product Type | Pump-Action Shotgun |
| Material | Steel receiver, barrel, and internals; Wood stock and forend |
| Manufacturing | Mossberg (New Haven line) |
| Finish | Blued steel |
| Hardness/Quality | Duty-grade, built for reliability |
| Compatibility | 12 Gauge shotshells (2 3/4″ and 3″) |
| Installation/Usage | Ready to use out of the box (FFL transfer required) |
| Weight | Approx. 7-7.5 lbs (unloaded) |
| Dimensions | Varies by barrel length (typically 38-48″ OAL) |
| Country of Origin | USA |
| Condition | Police Trade-In (Good to Very Good, may show wear) |
| SKU | MOSS-NH600AT-P-12G |
What are the key features of the Mossberg New Haven 600AT?
This Mossberg New Haven 600AT 12 Gauge Police Trade-In comes with features that made it a staple for law enforcement:
- Proven Pump Action: The classic Mossberg pump mechanism is known for its positive cycling and reliability.
- 12 Gauge Power: Handles a wide range of 12 gauge ammunition, from birdshot for hunting to buckshot for defense.
- Durable Construction: Built with a steel receiver and robust components to withstand demanding use.
- Police Trade-In History: These shotguns have seen service, meaning they’ve been vetted for function, though they will show cosmetic wear.
- Tang Safety: Ambidextrous, top-mounted safety is intuitive and easy to operate under stress.
- Fixed Choke Barrel: Many police models feature a fixed cylinder or improved cylinder choke, ideal for buckshot patterns at closer ranges.
- Wood Furniture: Traditional wood stock and forend offer a classic look and feel, and can be refinished if desired.
Who is the Mossberg New Haven 600AT 12 Gauge Police Trade-In for?
Buy it if:
- ✅ You’re looking for a reliable, no-frills 12 gauge shotgun for home defense.
- ✅ You appreciate the history and character of a police trade-in firearm.
- ✅ You need an affordable, functional shotgun for general utility or truck gun duties.
- ✅ You want a robust platform for customization or restoration projects.
- ✅ You’re a Kansas hunter looking for a dependable shotgun for upland birds or deer slugs.
Skip it if:
- ❌ You require a pristine, cosmetically perfect firearm. Police trade-ins show their age.
- ❌ You need a shotgun with modern features like adjustable chokes or synthetic furniture (see our new shotgun inventory for alternatives).
- ❌ You’re looking for a lightweight field gun for extensive carrying (some models can be heavy).
How does the Mossberg New Haven 600AT compare to other shotguns?
| Feature | Mossberg New Haven 600AT (Police Trade-In) | Maverick 88 (New) | Benelli Nova (New) |
|---|---|---|---|
| Material | Steel receiver, wood furniture | Aluminum receiver, synthetic furniture | Steel skeleton, polymer overmold |
| Quality | Duty-grade, proven reliability | Good, budget-friendly | Excellent, modern design |
| Compatibility | Mossberg 500 parts commonality | Mossberg 500 parts commonality | Proprietary Benelli parts |
| Shipping | Same-day from Kansas Gunshop | Standard new firearm shipping | Standard new firearm shipping |
| Lifespan/Durability | Excellent, built to last decades | Good, for general use | Excellent, corrosion resistant |
| Price | $499.00 (Police Trade-In) | ~$250-300 | ~$450-550 |
Frequently Asked Questions
What is a “police trade-in” firearm?
A police trade-in firearm is a used firearm that was formerly issued to law enforcement agencies and later sold off. These firearms often show cosmetic wear from holster use, vehicle racks, and handling, but are generally well-maintained mechanically due to agency armorer inspections.
Is the Mossberg New Haven 600AT the same as a Mossberg 500?
The New Haven 600AT is essentially a Mossberg 500 sold under the New Haven brand, which was a Mossberg subsidiary. They share many common parts and design features, making parts availability generally good.
What kind of ammunition can I use in this 12 gauge shotgun?
This Mossberg 600AT is chambered for 12 Gauge, accepting both 2 3/4 inch and 3 inch shotshells. Always refer to the barrel markings on your specific firearm to confirm chambering before firing.
What condition can I expect for a police trade-in shotgun?
Police trade-ins typically range from Good to Very Good condition. Expect cosmetic blemishes like scratches, dings, and finish wear on the metal and wood. Mechanically, they are usually in good working order, but we recommend a thorough cleaning and inspection by a qualified gunsmith before use.
Can I use this shotgun for hunting in Kansas?
Absolutely. A 12 gauge pump-action shotgun like the Mossberg New Haven 600AT is a versatile tool for hunting in Kansas. Depending on the barrel and choke, it can be used for deer with slugs, waterfowl, upland birds, and small game. Always check current Kansas hunting regulations.
Where can I buy shotguns online?
You can buy shotguns online right here at Kansas Gunshop (kansas-gunshop.com). We offer a selection of new and used firearms, all shipped legally through an FFL dealer.
Do I need an FFL to purchase this shotgun?
Yes, as with all firearms, the Mossberg New Haven 600AT must be shipped to a licensed Federal Firearms License (FFL) dealer in your state for transfer. You will complete the background check at your chosen FFL.
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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