Winchester SX4 Waterfowl MOSGH Inv.+

The Winchester SX4 Waterfowl MOSGH (Mossy Oak Shadow Grass Habitat) is considered one of the fastest semi-automatic shotguns in the world.
The SX4 is the culmination of an ongoing collaborative development of the gas-operated shotgun by Winchester and Browning since the initial introduction of the Super-X(SX) series in 1974. With its back-bored barrels (71 cm or 76 cm), the three Invector Plus™ chokes, the TruGlo™ sight with a long front bead, the recoil-reducing "Quadra-Vent™" system for diverting combustion gases, and the Inflex™ stock cap technology for recoil minimization, the SX4 series showcases the full expertise of Winchester engineers.

The composite stock in "Waterfowl MOSGH" camouflage of the semi-automatic shotgun perfectly rounds off the concept of the SX4 series in terms of weight, ergonomics, and durability. The SX4 Waterfowl is a technologically advanced semi-automatic shotgun with eminently practical features in every respect. Additionally, thanks to the camouflage of the Winchester SX4 Waterfowl MOSGH, there is no danger of startling waterfowl due to unexpected reflections.

Active-Valve-System
The SX4 is a so-called gas-operated shotgun. Gas generated during firing is diverted through two openings in the barrel and used for the cycling process. The challenge is to divert enough energy even with light loads to avoid malfunctions. Winchester has solved this problem with the new Active-Valve-System, which fires loads from 28 g to 56 g without malfunctions and keeps the system clean with three rubber seals. Only as much gas is released as necessary for the operation of the system, and the excess is vented through the four Quadra-Vent ports near the fore-end.

Trigger and Safety
The safety is located on the trigger guard in front of the trigger and is disengaged by pressing from right to left with the trigger finger, or secured the other way around. A conversion for left-handed shooters is easily possible here. A red outline, which is only visible when the safety is disengaged, provides an additional visual signal. The ergonomic alignment of the safety button allows the shooter to develop an automatic response, so that the weapon is reflexively engaged and disengaged in a very short time. The trigger blade is pleasantly large, ensuring that the necessary tactile feedback is achieved even when wearing gloves. The trigger group can be quickly removed as a unit for cleaning by pushing out two pins. It can be reassembled in no time thanks to a self-aligning bolt holder connection.

Barrel
The barrel of the Winchester SX4 Waterfowl MOSGH is manufactured in lengths of 71 cm or 76 cm. The barrel is equipped with a 6 mm wide ventilated rib that carries a front bead. The top of the rib is finely guilloched. The barrel and chamber are hard chrome-plated on the inside, providing optimal rust protection. A special highlight is the back-bored barrel technology. The shotgun barrel tapers slightly from back to front, resulting in a smoother transition at the choke. This measurably increases shot speed, significantly reduces recoil, and greatly improves coverage.

Stock and Magazine
With its slim fore-end, the shooter’s hand is very close to the sight line, promising exceptional maneuverability. At the end of the tube magazine, there is a closure cap that can be easily unscrewed. Under this closure cap is the Turnkey, a pin that prevents the magazine from being loaded with more than two cartridges at once. The buttstock contributes to the perfect balance of the semi-automatic shotgun, allowing it to swing elegantly. Additionally, the length of the stock can be varied with spacers to fit the shooter. The buttstock is finished with a recoil-reducing stock cap.

Inflex
The buttstock of the Winchester SX4 Waterfowl MOSGH is equipped with the Inflex system, which dampens perceived recoil. The construction of the shotgun, combined with the Inflex spacers that can be attached individually or as a group, directs the energy of the recoil downward. This also minimizes the muzzle rise of the semi-automatic shotgun. The Inflex spacers are made of synthetic material and are available in different thicknesses.

Scope of delivery: Choke wrench, 3 Inv+-chokes (1/4, 1/2, 3/4), stock spacers, sling swivel

Caliber: 12/89

Technical data:

Barrel length: 71 cm or 76 cm
Chokes: Inv+ (1/4, 1/2, 3/4)
Barrel rib: 6 mm
Receiver: Aluminum
Stock: Composite
Stock length: 362 mm
Drop at comb: 44 mm
Drop at heel: 51 mm
Overall weight: 3.05 kg
Magazine capacity: 4+1
Barrel: Back Bored
Barrel finish: Camo