pistol
It is a 9 shot with s 4 3/4" blued barrel

 
Manufacturer: Ruger
Model: Standard
Caliber: 22LR
Action: semi auto
# Shots: 9
Finish: Blue
Barrel/Choke: 4 3/4" 
Serial Number: SN-115727
Other: Made in 1956
Condition: Used