The phrase "amount of ammunition" is correct and usable in written English.
It can be used when discussing the quantity or total of ammunition available or required for a specific purpose, such as in military or gaming contexts.
Example: "The soldiers were instructed to carry an adequate amount of ammunition for the mission ahead."
Alternatives: "quantity of ammunition" or "total ammunition available".
He was found with an undetermined amount of ammunition and weapons in the trunk.
Over the following days, a small amount of ammunition trickled to the rebels.
"Shouldn't the amount of ammunition being purchased bring up a red flag?" Mr. Peralta said.
Eight tanks, a remarkable amount of ammunition, and heavy and light weapons crossed the Tajik border into Afghanistan," Walid said.
But according to diplomats and Interfax, the cargo included 33 refurbished T-72 tanks, "quite a significant amount of ammunition" and grenade launchers.
Police said they found a large amount of ammunition in his car and close to 1,000kg (2,200lbs) worth of ammunition at his home.
A search of the car found a Romanian-made semiautomatic rifle with a "large scope" mounted on its top, nine spent cartridges, and large amounts of ammunition of the same size as a bullet later found at the White House.
Since the end of major combat operations, we have conducted raids seizing many caches of enemy weapons and massive amounts of ammunition, and we have captured or killed hundreds of Saddam loyalists and terrorists.
Some of the booby-trapped ordnance now in Syria might be the legacy of American seedings in Iraq, from where smugglers and arms dealers are moving large amounts of ammunition and weapons to the latest fight.
Yemen's Defense Ministry said Wednesday that the ship that the Yemeni authorities seized last month was carrying explosives, rockets, surface-to-air missiles, rocket-propelled grenades and large amounts of ammunition.
America could carry out an extensive air campaign using stealth technology and huge amounts of ammunition, dropping enormous payloads that are capable of hitting targets and penetrating to depths far beyond what Israel's arsenal can achieve.
