The Ruger 10/22 sniper rifle is back in use in the West Bank. The weapon has been outlawed under Israeli law since 2001. It was deemed “more lethal than previously thought” by the Israeli occupation Judge Advocate General Menachem Finkelstein after it killed several children in Gaza during the second Intifada.
Then in the 1990s the Russians noted that Chechen snipers were effectively using .22 LR (long rifle, them little bullets kids use to hunt squirrels and rabbits with) weapons. Inside towns and cities, the .22 LR sniper was very effective, especially since the Chechens would improvise a very workable silencer by putting a plastic bottle on the end of the rifle's barrel, with a hole in the bottom of the barrel for the bullet to exit. Using a cheap scope, Chechen snipers were very deadly at ranges of less than a hundred meters. Such ranges were pretty common in built up areas. And since you usually did not hear the shot (to the head or face, of course), you had a hard time finding the shooter.
Having suffered from these low tech .22 caliber Chechen snipers for ten years, the Russians have come out with their own professional .22 LR sniper rifle, the SV-99. This is a little heavier (at 3.8 kg/8.3 pounds) than your usual .22 LR rifle but is built for professionals. It has a heavier barrel, a bipod, silencer, and scope. It's a meter (39 inches) long and can accept five, eight, or ten round magazines. There is a compartment in the butt stock for two five round magazines. With the SV-99, at a hundred meters, a skilled shooter can consistently put all rounds in a 12mm (half inch) circle.