USA arms exports surged 25 percent over the five years to 2017, according to data released on Monday by the Stockholm International Peace Research Institute.
The report also said China's arms exports to Africa rose by 55 per cent over the period.
This has consolidated China's position as the main arms supplier, with Pakistan accounting for its biggest export market. Total arms imports by the kingdom rose 225 percent over the past five years, making it the world's second-largest importer overall.
France is the third-place exporter, followed by Germany and China.
Russian Federation remains the world's second-largest weapon exporter, accounting for around 20% of global supplies to 47 countries.
The Middle East, a region where in the past five years most countries have been involved in conflict, accounted for 32% of global imports of weapons.
However, the rise in arms import from the United States has been significant during the 2013-17 period. The United Arab Emirates was the fourth largest importer in 2013-17, while Qatar (the 20th largest arms importer) increased its arms imports and signed several major deals in that period.
The administration of US President Donald Trump has dubbed China as a "rival", and the latest SIPRI report shows how the US has used arms transfers as a foreign policy tool to offset Beijing's growing influence.
According to details, Pakistan accounted for 2.7pc of global arms imports during the aforementioned period.
"China, by contrast, is becoming increasingly capable of producing its own weapons and continues to strengthen its relations with Pakistan, Bangladesh and Myanmar through arms supplies", he said.
Arms imports by Egypt-the third largest importer in 2013-17-grew by 215 per cent between 2008-12 and 2013-17.
In 2017 it delivered one patrol ship, the USS Morgenthau, to Vietnam - the first major USA arms transfer to that country.
The sale from U.S. arms majors, too, reduced by 76% between 2013 and 2017 compared to the previous five-year period. Despite this, it was the world's fifth largest arms importer in 2013-17. A majority of these weapons have been procured by countries in India's neighbourhood.
"Widespread violent conflict in the Middle East and concerns about human rights have led to political debate in Western Europe and North America about restricting arms sales", Pieter Wezeman, senior researcher for the SIPRI Arms and Military Expenditure Programme, said in a statement.
Algeria accounted for 52 per cent of all African imports in 2013-17. The report found this maneuver to be a direct violation of the Arms Trade Treaty, and SIPRI wrote Monday that the rising number of weapons sales overseas meant such global agreements needed to be enhanced and enforced.
The SIPRI report notes deteriorating ties between the United States and Pakistan, stemming from the perception that Islamabad is not doing enough to combat terrorism in Afghanistan. "Pakistan was the main recipient (35 per cent), as it has been for all five-year periods since 1991", the report says.