Go to gunbroker.com and look under Ruger.. It will give you a ball park...
10-1000 USD depending on specifics. You will have to call Ruger for the ship date
No published sn data
20-150 USD or so
Double Action pistols may not HAVE a manual safety. Like a double action revolver, the trigger must move through a long and deliberate arc for the gun to fire. Not all guns have had a safety.
25-250 USD or more depending on specifics
Often with a semiautomatic pistol, once a loaded magazine is inserted and the slide racked, you now have a pistol that is ready to fire: there is a fresh round in the chamber, the hammer (or striker) is cocked. This CAN be a dangerous situation, if the shooter isn't going to fire the weapon immediately. In the past, a person would have to CAREFULLY lower the hammer while pointing the pistol in a safe direction. If they slipped, they would fire a bullet accidentally AND their thumb would get hurt--mashed by the recoiling slide & hammer. A decocking lever prevents such accidents by LOWERING the cocked hammer to a safe position. Once utilized, if the shooter wanted to prepare the pistol for firing, they would have to: Manually recock the hammer, if the pistol were a single action only type, or, manually recock, or utilize the pistol's long Double Action trigger, if the pistol was a Double Action/Single Action type.
11.2 inches in 9x19 parabellum
You probably have a Mk. I pistol, manufactured circa 1958. If this is the case, it would be a semi-auto pistol, chambered in .22 Long Rifle.
11.2 inches in 9x19 parabellum
18 years
Small inexpensive pistol