Russia / USSR
14.5 mm/93 (0.57") 2M-7
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People's Republic of China
14.5 mm/93 (0.57") Type 69
Updated 14 November 2008
This gun replaced the earlier Degtyarev DHSK 38 12.7 mm gun on a one-for-one basis starting in 1945.  The bullet for these guns was originally developed in the 1930s for anti-tank rifles.   During World War II, it was found to be inadequate in its intended role.  Rather than retooling the factories, the bullet was instead carried over to the KPV heavy machine gun.

Weapon is air-cooled.

This weapon is produced in the PRC under the designation Type 69 for the naval version.

Ammunition for these weapons is currently (2007) being produced by Bulgaria, Egypt, People's Republic of China, Poland, Romania and Russia.
WNRussian_145-93_2m-7_ZPU-4_pic.jpg

A Soviet-made ZPU-4 quad 14.5 mm anti-aircraft machine gun
U.S Defense Department Photograph No. DD-ST-85-01308
WNRussian_145-93_2m-7_ZPU-2_pic.jpg

070327-A-2394G-086

A Chinese copy of a Russian ZPU-2 twin 14.5 mm Anti-Aircraft Gun System at border checkpoint 7 in the Tirzaye District in the Khowst Province of Afghanistan in March 2007
U.S Army Photograph No. 070327-A-2394G-086
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Gun Characteristics
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Designation Russia / USSR:  14.5 mm/93 (0.57") 2M-7
PRC:  14.5 mm/93 (0.57") Type 69
Ship Class Used On Russia / USSR
   Patrol Boats

People's Republic of China
   Patrol Boats
Date Of Design 1944
Date In Service 1945
Gun Weight N/A
Gun Length oa N/A
Barrel Length about 53 in (135 cm)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire Cyclic:  600 rounds per minute
Practical:  150 rounds per minute
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Ammunition
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Type Fixed
Weight of Complete Round N/A
Projectile Types and Weights Russia
   AP-I-57:  2.25 oz (64.0 gms)
   AP-I BS41:  2.27 oz (64.4 gms)
   AP-I-T-57:  2.12 oz (60.0 gms)

PRC
   API Type 56:  2.25 oz (64.0 gms)
   API-T Type 56:  2.08 oz (59.0 gms)
   HE-I:  2.08 oz (59.0 gms)
Bursting Charge N/A
Projectile Length N/A
Complete Round Length AP-I:  6.1 in (15.58 cm)
Cartridge Case Type, Size and Empty Weight Steel or brass, 14.5 x 114 mm
Propellant Charge N/A
Muzzle Velocity AP-I-57:  3,202 fps (976 mps)
API Type 56:  3,215 - 3,264 fps (980 - 995 mps)
HE-I:  3,281 - 3,330 fps (1,000 - 1,015 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun
(see Note)		 N/A
Note:  Ammunition is usually supplied in 150 round belts.
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Range
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Elevation With AP-I (64.0 gms)
Effective range against surface targets 2,400 yards (2,200 m)
Effective range against air targets 2,200 yards (2,000 m)
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Armor Penetration
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Range With Russian AP-I 57 2.25 oz (64.0 gms)
110 yards (100 m) 1.5 in (38 mm)
Range With PRC API Type 56 2.25 oz (64.0 gms)
330 yards (300 m) 0.8 in (20 mm) @ 20 degrees
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Mount / Turret Data
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Designation Twin Mounts
Weight  1,320 lbs. (600 kg) without ammunition
Elevation -10 / +85 degrees
Elevation Rate Manual operation, only
Train 360 degrees
Train Rate Manual operation, only
Gun recoil N/A
Note:  Most Russian twin mounts are over / under while PRC mountings are side by side.
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Data from
"The Naval Institute Guide to World Naval Weapon Systems 1991/92" by Norman Friedman
"Jane's Ammunition Handbook:  Ninth Edition 2000-2001" edited by Terry J. Gander and Charles Q. Cutshaw
"Jane's Fighting Ships 1998-99" edited by Capt. Richard Sharpe, RN