As the legacy of Winchester’s Super X4 series of gas-piston-operated shotguns has grown, it was only a matter of time before the company scaled down and chambered the 12-ga. platform for 20-ga. shotshells. Released at SHOT Show 2019, the SX4 20-ga. shotgun provides options for three barrel lengths, 24”, 26” and 28”, all of which provide a 1/4" vent rib and fiber-optic sight bead near the muzzle. SX4 barrels additionally feature a back-bore treatment for improved pattern consistency. Invector-plus chokes come standard, as well as an Inflex 1 recoil pad to mitigate felt recoil. To learn more about the Winchester Repeating Arms SX4 20-ga. shotgun, watch our NRA Gun of the Week video hosted by American Rifleman’s Christopher Olsen.
Specifications:
Manufacturer: Winchester Repeating Arms
Model: Super X4 (SX4)
Action Type: gas-piston-operated semi-automatic shotgun
Gauge: 20; 3”
Barrel: 24”, chrome-plated steel
Sights: fiber-optic front
Trigger: 6-lb., 3-oz. pull
Magazine: four-round tubular
Stock: black composite
Finish: matte black
Weight: 6 lbs. 8 ozs.
MSRP: $940
Additional Reading:
Tested: Winchester Super X4 Shotgun
A Look Back at the Winchester Model 12 Shotgun
Combat Shotguns of the Vietnam War
I Have This Old Gun... Winchester Model 1897 “Trench Gun”
NRA Gun of the Week: Winchester Repeating Arms SX4 20-ga. Shotgun
More like this from around the NRA
Latest
New for 2026: Stoeger STR-9 Thinline+ Pistol
Stoeger refines its STR-9 Thinline pistol to be even easier to carry.
Finding The Natural Point Of Aim
Nearly every shooter understands the basic principles of marksmanship: position, grip, sight alignment, breathing, trigger control and follow-through.
Firearm Ownership Reaches New Record
The NSSF estimates there are more than 32 million modern sporting rifles in circulation.
Preview: Hornady 12th Edition Reloading Manual
While the internet offers quick access to information, trusting unvetted recipes for cooking up ammunition is less than ideal, which is why makers of reloading products like Hornady publish thorough books for such tasks.
Review: Bushmaster V-Radicator
The business of dispatching unwanted critters requires a platform capable of a high degree of accuracy. Nuisance animals such as prairie dogs are both small and skittish in nature, meaning that they tend to keep their distance and scurry away upon the arrival of incoming fire.
New for 2026: Smith & Wesson FPC in 5.7x28 mm
The folding carbine line expands to include the 5.7 mm chambering.
Interests
SECTIONS
IN THE SPOTLIGHT
EXPLORE MORE NRA PUBLICATIONS
