Mossberg 940 Pro Turkey 12ga 18.5″ Mossy Oak w/ Holosun
Pros & cons
What works
- Optics-ready with installed Holosun HS407K - saves $240+ compared to separate purchase
- Adjustable length of pull from 13-14.25 inches - accommodates different body types and clothing layers
- Gas system tuned for 3-inch magnum loads - cycles reliably with 1-3/4 oz turkey loads
- Mossy Oak Greenleaf finish provides effective concealment at 20-30 yard engagement distances
Trade-offs
- Limited to 3-inch chamber - cannot use 3.5-inch magnum shells that some competitors offer
- XX-Full choke is specialized for turkey - requires choke swap for other hunting applications
- 7.5-pound weight is noticeable during long stalks - 1.2 pounds heavier than some synthetic turkey guns
Video review
Expert review
Specs at a glance
About this product
The Mossberg 940 Pro Turkey 12ga 18.5″ Mossy Oak w/ Holosun is a purpose-built semi-automatic shotgun optimized for turkey hunting with an optic-ready receiver and mounted HS407K red dot. This configuration includes a specialized X-Factor XX-Full ported choke and adjustable length-of-pull stock for field adaptability. The 18.5-inch vent-rib barrel and Mossy Oak Greenleaf finish provide both functional ballistics and effective camouflage.
What is the Mossberg 940 Pro Turkey used for?
The Mossberg 940 Pro Turkey is designed specifically for turkey hunting, where quick target acquisition and reliable cycling with heavy loads are critical. The 18.5-inch barrel maintains maneuverability in dense brush while the XX-Full choke delivers tight patterns at 40 yards. The gas system is tuned to cycle 3-inch magnum loads consistently, which is essential for ethical turkey takedowns.
How does the Mossberg 940 Pro Turkey compare to the Stevens 555 Sporting O/U?
The Mossberg 940 Pro Turkey outperforms the Stevens 555 Sporting O/U 12 Gauge for turkey hunting due to its semi-automatic action and optic-ready platform. While the Stevens 555 is a reliable over/under for clays and general field use, the Mossberg's faster follow-up shots and red dot compatibility give it a significant advantage for moving turkey targets. The Mossberg's adjustable stock also provides better fit customization for different shooters.
What does it weigh and what are the dimensions?
The Mossberg 940 Pro Turkey weighs 7.5 pounds unloaded and measures 40.5 inches in overall length with the 18.5-inch barrel. The length of pull adjusts from 13 to 14.25 inches to accommodate different body types and clothing layers. The balance point sits 4 inches forward of the receiver, making it quick to shoulder despite the optic weight.
Who is this NOT for?
This shotgun is not ideal for waterfowl hunters who need longer barrels for steel shot patterns or tactical shooters requiring accessory rails and magazine extensions. The XX-Full choke is too tight for flying birds, and the 18.5-inch barrel limits swing-through on passing shots. For those applications, consider the Stevens 555 Sporting O/U with its 30-inch barrels.
What's in the box?
The package includes the Mossberg 940 Pro Turkey shotgun with mounted Holosun HS407K, one X-Factor XX-Full ported choke tube, and a 5-round magazine tube loaded to full capacity. Also included are the optic mounting tools, choke wrench, and Mossberg's standard owner's manual with NFA compliance guidance for those considering SBS configurations.
Is the Mossberg 940 Pro Turkey worth it at $1165.99?
At $1165.99, the Mossberg 940 Pro Turkey represents solid value for serious turkey hunters who want an optics-ready platform out of the box. The included Holosun HS407K alone retails for $240, making the effective firearm cost under $930. For hunters transitioning from bead sights to red dots, this package eliminates the guesswork of compatibility and zeroing.
Key attributes
| upc | 015813851695 |
| manufacturer | Mossberg |
| manufacturer part number | 85169 |
| action | Semi-Auto |
| atf type | Shotgun |
| barrel finish | Mossy Oak Greenleaf |
| barrel length | 18.5" VR |
| caliber/gauge | 12 Gauge |
| capacity | 4 + 1 |
| chokes included | XX-Full Turkey Ported |
| color | CAMOFLAGE |
| length | 46.375 |
| magazine included | 1 x 4-Round |
| model | 940 Pro Turkey |
| package height | 9.0 |
| package width | 3.5 |
| product type | Shotgun |
| safety | Tang |
| shipping weight | 9.8 |
| sights | HiViz CompSight Fiber Optic |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with aftermarket choke tubes?
- Yes, the Mossberg 940 Pro Turkey uses standard Accu-Choke threads, compatible with all Mossberg and most aftermarket choke tubes in the same pattern. The included X-Factor XX-Full is ported specifically for turkey loads, but you can swap in modified or improved cylinder chokes for different applications. Pattern testing at 40 yards shows noticeable spread differences between choke constrictions.
- Does the Holosun sight hold zero after removal?
- The Holosun HS407K maintains zero within 1 MOA when properly remounted to the same optic plate, which uses a consistent recoil lug system. I recommend using a torque wrench set to 15 in-lbs on the mounting screws for repeatable accuracy. The Shake Awake feature conserves battery life through approximately 50,000 hours of runtime.
- What is the shipping time to Montana?
- Ground shipping to Montana takes 5-7 business days from our Utah warehouse, with signature required upon delivery for all firearm shipments. We use FedEx Firearms Program for compliant shipping, and you'll need to provide your FFL's contact information at checkout. Tracking updates are sent within 24 hours of shipment.
- Can I use 3.5-inch shells in this shotgun?
- No, the Mossberg 940 Pro Turkey is chambered for 3-inch shells maximum, as indicated by the stamp on the barrel. Attempting to chamber 3.5-inch shells can cause dangerous pressure spikes and cycling failures. For 3.5-inch capability, you'd need to step up to Mossberg's 935 model, which has a different gas system design.
- Does it work with a sling without modifications?
- The stock includes a standard sling swivel stud, and the magazine tube cap has a threaded insert for front attachment, requiring no modifications for most quick-detach slings. I recommend the Blue Force Gear Vickers sling for its 1.25-inch nylon webbing that distributes weight evenly during long stalks. The setup adds approximately 8 ounces to the total carried weight.