The Winchester Wildcat SR is a semi-automatic .22 LR rifle with a polymer upper and lower, 16.5-inch button-rifled chromoly steel barrel, and a matte black finish. At 4 lbs and 34.75 inches overall, it's a compact and light option for a rimfire rifle. 
 

Key Specifications 

• Caliber: .22 LR 
• Action: Semi-Automatic 
• Capacity: 10 Rounds 
• Barrel Length: 16.5 inches (overall length: 34.75 inches) 
• Weight: 4 lbs. 
• Finish: Matte Black 
   

Detailed Features 

The 16.5-inch barrel has a recessed target-style crown and is threaded 1/2" x 28 TPI for suppressor or muzzle device attachment. Sights are fully adjustable — ghost ring rear, ramped post front — and an integral Picatinny rail is on top for optics. The magazine release is dual ambidextrous, so left- and right-handed shooters reload the same way. Polymer construction keeps weight down without affecting the functional parts. 
 

Usage 

Works well for rimfire competition, plinking, and small game hunting. The semi-auto action gives quick follow-up shots, and the threaded barrel means suppressor-ready out of the box. .22 LR keeps ammunition costs low for high-volume range use.

The Winchester Wildcat SR generally gets positive feedback, mostly around its weight, value, and threaded barrel. At 4 lbs, it's noticeably lighter than many rimfire rifles, and buyers tend to appreciate that. The matte black finish holds up and the ghost ring sights work well without forcing a scope purchase.

Reliability with .22 LR gets discussed often — most owners report consistent feeding, though a few note that ammunition brand makes a difference. Some budget or bulk-pack loads cycle less reliably than quality brass-cased ammo, which is common across semi-auto rimfires.

On the downside, some buyers compare it unfavorably to more established rimfire platforms in terms of overall build quality. It's priced to reflect that — it's a capable rifle at the price point, not a direct competitor to mid-range options costing significantly more.