The Savage 42 Takedown is a break-action combination gun chambered in .22 LR over .410 bore with a 20-inch barrel. It has an OD green synthetic stock and a single-shot configuration in both barrels. 
 

Key Specifications 

• Brand: Savage 
• Model: 42 Takedown 
• Caliber: .22 LR / .410 bore 
• Capacity: 1 round 
• Barrel Length: 20 in 
• Color/Finish: OD Green 
   

Detailed Features 

• Over/under combination layout with .22 LR rifle barrel over .410 shotgun barrel 
• 20-inch barrel with takedown design for compact transport 
• OD green synthetic stock 
• Single-shot capacity in each barrel

Owners of the Savage 42 Takedown in the 20-inch barrel configuration tend to favor it over the shorter variant when weight and length are not the primary constraint. The extra barrel length is commonly cited as improving .410 pattern and giving slightly better .22 LR velocity at range.

The takedown feature is the headline reason most buyers choose the 42. Compact storage in a pack or vehicle is the recurring use case, and the OD green synthetic stock gets marks for holding up to rough handling. The combination of two calibers in one package is described as well-suited to small game and camp chores.

Criticism tends to focus on the single-shot design, which some owners find limiting when a follow-up shot matters. Trigger pull is also a common complaint. The 42 Takedown is generally regarded as a purpose-built trail gun rather than a general-purpose firearm, and opinions are mostly positive when buyers approach it with that expectation.