recoilless rifle
recoilless gun

I have visions of Humvees with recoilless rifles mounted on the back.

By early 1945, over 2,000 M18 recoilless rifles and 800,000 rounds of ammunition were on order.

An American 105-millimeter recoilless rifle, bolted to the bed of a pickup truck, was on its way to the fighting.

A tank was knocked out by a 57 mm recoilless rifle.

An enemy 75 mm recoilless rifle knocked out one of the supporting tanks.

In those two encounters, the soldiers killed 15 guerrillas and captured a 90-millimeter recoilless rifle.

This distinction is often lost, and both are often called recoilless rifles.

He also led British developments in recoilless rifles as a means to deliver the shell.

It was a tractor seat, supported and backed by recoilless rifles bound together.

The men might have recoilless rifles, maybe even a light rocket launcher.