The CRV7, short for “Canadian Rocket Vehicle 7”, is a 2.75-inch (70 mm) folding-fin ground attack rocket produced by Bristol Aerospace in Winnipeg, Manitoba. It was introduced in the early 1970s as an upgraded version of the standard U.S. 2.75-inch air-to-ground rocket. It was the most powerful weapon of its class, the first with enough energy to penetrate standard Warsaw Pact aircraft hangars. The CRV7 remains one of the most powerful air-to-ground attack rockets to this day, and has slowly become the de facto standard for Western-aligned forces outside the United States. Beginning in 2021, 83,303 stored Canadian CRV7s are slated for disposal, having been removed from service from 2005 to 2007. In 2024 the Department of National Defence was considering donating the rockets to Ukraine as military aid to defend against the Russian invasion of Ukraine. An estimated 8,000 rockets have functioning warheads, while the remainder could be used for parts or modification. In September 2024 Canadian defence minister Bill Blair announced Canada would be sending 80,840 rocket motors to Ukraine over the next months, in addition to the 2,100 already shipped, along with 1,300 warheads.

This is the American 70mm (2.75“) M151, a High-Explosive-Fragmentation (HE-Frag), 10-pounder, fin-stabilised, General-Purpose (GP) rocket warhead designed to provide improved aerial artillery capability for the 2.75” FFAR and Hydra 70 rocket system.

This rocket is an Air-to-Ground-Rocket (AGR) primarily deployed from rotary-wing and other low-speed aircraft.

The warhead is olive-drab and the designation and other information are stencilled in yellow.

Early models do not have a fuze liner.

Warheads with a fuze liner are marked W/LINER.

The forward section, rear section and base are brazed together.

It is fitted with the nose-mounted M433 remotely set multi-function Impact (IMP) or Delay (DLY) fuze, which can provide for variable depth penetration of forest canopy, buildings or bunkers, it also has a Super-Quick (SQ) Graze (GRZ) function.

Upon fuze functioning, the main-charge detonates and the warhead shatters into small high-velocity fragments.

This is the American 70mm (2.75“) M229, a High-Explosive-Fragmentation (HE-Frag), fin-stabilised, General-Purpose (GP), 17-pounder, rocket warhead designed to provide improved aerial artillery capability for the 2.75” Hydra 70 rocket system.

The M229 warhead is an elongated version of the M151 (10-pounder) warhead and is commonly referred to as the 17-pounder warhead.

This rocket is an Air-to-Ground-Rocket (AGR) primarily deployed from rotary-wing and other low-speed aircraft.