The Ruger 10/22 Sporter 75th Anniversary is a semi-automatic rimfire rifle chambered in .22 LR with an 18.5-inch barrel and a 10+1 capacity. It has a walnut-stained hardwood stock and a black receiver. This variant (31375) differs from the natural-finish version by its walnut stain, giving it a darker, more traditional appearance. 
 

Key Specifications 

• Brand: Ruger 
• Model: 10/22 Sporter 
• Caliber: .22 LR 
• Action: Semi Auto 
• Barrel Length: 18.5 inches 
• Capacity: 10+1 
• Color/Finish: Walnut Stained Hardwood, Black Receiver 
   

Detailed Features 

• Semi-automatic .22 LR platform with 18.5-inch barrel 
• 10+1 round capacity 
• Walnut-stained hardwood stock 
• Black (satin black) receiver 
• 75th Anniversary edition designation

Buyers drawn to the 31375 specifically tend to prefer the walnut stain over the natural hardwood finish of the companion model. The darker stock reads as more traditional, and owners who already have natural-finish 10/22s sometimes pick this version for the visual contrast in a collection.

The 10/22 Sporter 75th Anniversary in walnut gets the same reliability comments as any 10/22 variant. Complaints are rare and usually come down to minor cosmetic issues on individual units. The sporter stock configuration, with its barrel band and curved grip, is something owners either prefer over the carbine stock or find less comfortable for bench use.

As a commemorative variant, this model is sometimes purchased without being shot. That is a common pattern with 10/22 anniversary editions, and opinions differ on whether these hold value better than standard production guns. At regular retail most owners consider it a fair deal for a walnut-stocked rimfire semi-auto.