The Berezin UB (Russian: УБ - Универсальный Березина) (Berezin's Universal) was a 12.7 mm caliber Soviet aircraft machine gun widely used during World War II.
It was available in three variants:
Berezin UBK - Designed for mounting in aircraft wings.
Berezin UBS - Designed for mounted on the front of the aircraft. synchronized with the propellers.
Berezin UBT - Designed for mounting in turrets.
Error creating thumbnail: File missing Berezin UBK (for the wings) - 12.7x108mm Error creating thumbnail: File missing Berezin UBS (Synchronized) - 12.7x108mm Error creating thumbnail: File missing Berezin UBT, a turret version of UB with spade grips - 12.7x108mm Specifications Caliber : 12.7×108mmWeight : 21.45 kg (UBS), 21.14 kg (UBK), 21.43 kg (UBT)Length : 1347 mm (UBS, UBK), 1397 mm (UBT)Barrel length : 890 mmRate of fire : 800–1050 RPM, (700-800 synchronized UBS)The Berezin UB and variants can be seen in the following films, television series, video games, and anime used by the following actors:
Film
Title
Actor
Character
Note
Date
Fighting Film Collection No. 6 (Boyevoy kinosbornik No. 6) Mounted on Pe-2 bomber; documentary footage
1941
Moscow Skies (Nebo Moskvy) UBS, mounted on MiG-3 fighters
1944
A Noisy Household (Bespokoynoe khozyaystvo) UBS, mounted on Yak-9 fighter
1946
The Battle of Stalingrad (Stalingradskaya bitva), Part I UBS, mounted on Yak-9; UBT, mounted on Pe-2 and Il-2; documentary footage
1949
The Battle of Stalingrad (Stalingradskaya bitva), Part II UBT, mounted on Il-10; documentary footage
1949
Peace to Him Who Enters (Mir vkhodyashchemu) UBT, mounted on Il-2; Seen in documentary footage
1961
Chronicles of a Dive Bomber (Khronika pikiruyushchego bombardirovshchika) Oleg Dal Yevgeni Sobolevski
UBT, mounted on Pe-2 bomber
1967
Chronicles of a Dive Bomber (Khronika pikiruyushchego bombardirovshchika) Lev Vajnshtejn Veniamin Gurevich
UBT, mounted on Pe-2 bomber
1967
Strong with Spirit (Silnye dukhom) Nose UBK, mounted on Pe-2 bomber; Seen in documentary footage
1967
Fit for Non-Combatant Duty (Goden k nestroevoy) UBT, mounted on Il-2; documentary footage
1968
I Am 11-17 (Ya - 11-17) UBT, mounted on Il-2 and Pe-2; documentary footage
1970
Appointed as the Granddaughter (Naznachayeshsya vnuchkoy) UBT, mounted on Il-2; documentary footage
1976
Front in the Rear of the Enemy (Front v tylu vraga) Air gunner
UBT, mounted on Li-2 cargo plane
1981
Television Video Games 
