Question: Which rifle used during World War II uses a Soviet sniper scope known as the PU scope?
Context: The Panzerbüchse" 39, abbreviated PzB 39, (German: "tank hunting rifle model 39") was a German anti-tank rifle used in World War II.  It was an improvement of the Panzerbüchse" 38 (PzB 38) rifle. The M18 recoilless rifle was a 57 mm shoulder fired anti-tank recoilless rifle used by the U.S. Army in World War II and the Korean War.  Recoilless rifles are capable of firing artillery-type shells at reduced velocities comparable to those of standard cannon, but with greater accuracy than anti-tank weapons that used unguided rockets, and almost entirely without recoil.  The M18 was a breech-loaded, single-shot, man-portable, crew-served weapon.  It could be used in both anti-tank and anti-personnel roles.  The weapon could be both shoulder fired or fired from a prone position.  The T3 front grip doubled as an adjustable monopod and the two-piece padded T3 shoulder cradle could swing down and to the rear as a bipod for the gunner.  The most stable firing position was from the tripod developed for the water-cooled Browning M1917 machine gun. The PU scope (ПУ, прицел укороченный, 'Scope short-cut' in comparison to PE scope) is a sniper scope of Soviet manufacture, widely used on the Mosin–Nagant and SVT-40.  The scope was fixed at 3.5 power magnification.  The reticle could be adjusted vertically for range, from 0 to 1300 meters.  Horizontal adjustments for windage were also provided. Vasily Grigoryevich Zaytsev; 23 March 1915 – 15 December 1991) was a Soviet sniper and a Hero of the Soviet Union during World War II.  Prior to 10 November, he killed 32 Axis soldiers with a standard-issue rifle.  Between 10 November 1942 and 17 December 1942, during the Battle of Stalingrad, he killed 225 enemy soldiers, including 11 snipers. The Type 99 sniper rifle (九九式狙撃銃 , Kyūkyū-shiki sogeki-jū ) was a Japanese sniper rifle used during the Second World War.  It was a sniper version of the Type 99 rifle, chambered in the 7.7×58mm round.  There were a few variations of the Type 99 sniper rifle, some with the straight bolt and the scope mounted on the left side of the receiver which allowed use of stripper clips.  Another variation was one with a bent bolt and the scope above the receiver which required the sniper to load the rounds one at a time.  The shorter barrel, combined with the larger caliber round made concealment more difficult than the Type 97 rifle that preceded it, considering the louder muzzle blast and flash caused by the increased powder capacity. Noah Petrovich Adamiya (Georgian: ნოე ადამია , Noe Adamia; Russian: Ной Петрович Адамия ) (December 21, 1917 – July 3, 1942) was a Soviet sniper of the Soviet Maritime Forces and Hero of the Soviet Union during World War II.  He participated in the Sevastopol sniper movement and personally trained about 80 snipers.  Adamiya is credited with killing around 300 German soldiers during the Battle of Sevastopol. Semyon Danilovich Nomokonov (12 August 1900 – 12 June or 15 July 1973) was a Soviet sniper during World War II, credited with 367 kills, recorded in his sniper log.  An ethnic Buryat-Mongolian Hamnigan Evenk, Nomokonov was among the indigenous peoples of Russia who fought in the war.  He received the nickname Taiga Shaman from the enemies. The SVT-40 (Samozaryadnaya Vintovka Tokareva, Obrazets 1940 goda, "Tokarev self-loading rifle, model of 1940", Russian: Самозарядная винтовка Токарева, образец 1940 года) is a Soviet semi-automatic battle rifle.  The SVT-40 saw widespread service during and after World War II.  Intended to be the new service rifle of the Soviet Red Army, production was disrupted by the German invasion in 1941 resulting in a change back to the older Mosin–Nagant bolt-action rifle for the duration of World War II.  After the war new rifles were adopted by the Soviet Union, such as the SKS and the AK-47. Mikhail Ilyich Surkov (Russian: Михаил Ильич Сурков ) was a Soviet sniper in the 4th Rifle Division of the Red Army during World War II.  He was born in a Siberian town of Krasnoyarsk and hailed from a family of hunters and fur-trappers. The Whitworth Rifle was a single-shot muzzle-loaded rifle used in the latter half of the 19th century.  Possessing excellent long range accuracy for its time, the Whitworth, when used with a scope, was the world's first sniper rifle, and saw use with Confederate sharpshooters in the American Civil War.
Answer: SVT-40