He was born in 1925. He was drafted into the Red Army by the Bolkhovsky RVC. At the front - from January 18, 1942. Guard Junior Sergeant. He fought at the Western, Bryansk, Belorussian and 1 Ukrainian fronts. The gunner of the 7th battery, 313th Guards Artillery Order of Bohdan Khmelnitsky regiment, 121st Guards Riflemen Order of Gomel Red Banner Division, Suvorov Division. Hero of the Soviet Union. He was awarded the Gold Star Medal, the Orders of Lenin, the Order of Glory of the III degree and the Order of the Great Patriotic War of the I degree, two medals "For Combat Merit". On July 24, 1943 in the battle for the village of Savenkov, Orlov region, being in an open firing position, as part of the gun crew, he hit 1 self-propelled gun, 1 car, destroyed 3 machine guns and 70 Germans, which helped to complete the combat mission" (order for the 912 artillery regiment). From the award sheet to the Order of Glory, III degree: "When repulsing strong enemy counterattacks from 19 to 21 April 1945 in the area of Neu-Petershain, Gross-Luy and Gross-Bukov under heavy enemy artillery fire, acting with his gun direct fire, destroyed 11 machine-gun points, 8 German cars, 12 carts with ammunition and over 80 enemy soldiers and officers." From the award list to the title of Hero of the Soviet Union: "on January 27, 1945, under heavy air bombing, comrade Estin ferried his gun along with the crew to the western bank of the Oder river and immediately opened fire on the counterattacking enemy. Despite the numerical superiority of the enemy forces, comrade Estin courageously and steadfastly shot at point-blank range the attacking Nazis, repulsed 3 enemy counterattacks, held a small bridgehead, destroying 1 tank, 2 armored personnel carriers, 5 machine-gun points and over 40 enemy soldiers and officers. When he ran out of the shells and the enemy again resumed the counterattack, comrade Estin with his personal example, inspiring his crew to the feat, in hand-to-hand combat with a bayonet and butt destroyed 6 soldiers and 1 officer, while capturing a light machine gun, 3 rifles and a pistol, thereby helping to repel the enemy's counterattack." He died in 2006.