2A28 Grom

Also known as

Grom
73 mm Grom

The 2A28 Grom is a Soviet 73 mm low-pressure smoothbore cannon designed by KBP in Tula and used as the main gun on BMP-1 and BMD-1 infantry fighting vehicles. Its compact semi-automatic loading system and low-pressure ammunition gave the weapon a short-range direct-fire profile suited to light armored carriers.

2A28 Grom, 73 mm low-pressure smoothbore cannon, Artillery

Image source: Panzermuseum Munster 2010 0660.JPG - Wikimedia Commons

Profile / Specs

Profile

Origin: Soviet Union
Built by: KBP
Type: 73 mm low-pressure smoothbore cannon
Service note: Early 1960s design; mounted on BMP-1 and BMD-1 infantry fighting vehicles
Designed: Early 1960s
Produced: 1966-present

artillery anti-tanksmoothboresemi-automatic

Specifications

Caliber: 73 mm
Type: Low-pressure smoothbore cannon
Mass: 115 kg
Rate of fire: 6-8 rounds per minute
Maximum aimed range: 1,300 m
Loading mode: Semi-automatic
Ammunition: PG-15V HEAT, OG-15V HE-FRAG

Mounted Platforms

The 2A28 Grom is documented as the main armament of the BMP-1 family and the BMD-1 airborne infantry fighting vehicle.

Firing weapon

Weapon type

Firing evidence

BMD-1, Airborne amphibious infantry fighting vehicle, Armored Vehicles

Airborne infantry fighting vehicle

Weaponsystems.net identifies the BMD-1's main armament as the 73 mm 2A28 Grom low-pressure cannon with 40 rounds.

Sources: BMD-1

Service And Conflict Use

Service History

In service: Used as the main gun on Soviet BMP-1 and BMD-1 infantry fighting vehicles.
Used by: BMP-1, BMD-1

Media

2A28 Grom Images

2A28 Grom, 73 mm low-pressure smoothbore cannon, Artillery - view 1 — Source: BMP-1 AP 2.jpg - Wikimedia Commons

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Sources

2A28 Grom (Wikipedia)Publisher: Wikipedia | Note: Supports 2A28 Grom origin, designer and manufacturer context, early development period, ammunition types, and BMP-1/BMD-1 platform context. | Accessed: 2026-06-27 73 mm gun 2A28Publisher: ZTS | Note: Supports caliber, rate of fire, aimed distance, loading mode, and electromechanical loading mechanism. | Accessed: 2026-06-27 BMD-1Publisher: Weaponsystems.net | Note: Supports the BMD-1 main armament relationship to the 73 mm 2A28 Grom cannon. | Accessed: 2026-06-27 Panzermuseum Munster 2010 0660.JPG - Wikimedia CommonsPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the primary 2A28 Grom image. | Accessed: 2026-06-27 BMP-1 AP 2.jpg - Wikimedia CommonsPublisher: Wikimedia Commons | Note: Image provenance and licensing page for a second 2A28 Grom image. | Accessed: 2026-06-27