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
A Bigger Rhino: The Chiappa 60DS L-Frame In .44 Mag.
The Chiappa Rhino revolver design is "anything but ordinary," and for 2026, the company is upscaling the concept to handle the .44 Magnum cartridge.
Preview: Magpul MOE QD Bipod For M-Lok
Simple, inexpensive and supremely easy to use, the new MOE QD Bipod For M-Lok is Magpul’s fastest-mounting bipod model by far, as it takes only about five seconds for the practiced hand to securely affix it to an M-Lok-clad fore-end.
Gun Of The Week: Henry SPD HUSH
For its first design, Henry Repeating Arms' Special Products Division developed the HUSH, or the Henry Ultimate Suppressor Host.
The Armed Citizen® Dec. 19, 2025
Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.
TriStar Arms Protégé X: A Pocket-Size Punch
Inspired by successful designs of the past, the TriStar Arms Protégé X is a pocket-size, M1911-style handgun chambered for the popular 9 mm cartridge.
Hornady Family Honored with Legacy Award
In October, the Hornady family was recognized by the Greater Grand Island Community Foundation for its contribution to the city that Hornady calls home.
Interests
SECTIONS
IN THE SPOTLIGHT
EXPLORE MORE NRA PUBLICATIONS
