Let the US pullout of NATO and see how the EU long the EU will remain with 226 bln.
Most NATO members defense budgets and contribution are below NATO requirements.
And again this has nothing to do with spending, France, Germany, the UK, Spain, Italy, Sweden and the Netherlands combined export more arms than the US while having approximately the same population.
Overall the EU as a whole exports more arms per capita than the US, you might not like buying guns but you sure love selling them.
According to [1], the volume of arms exports in 2015 (at least) was lower for the countries you mentioned (a sum of USD 7755M for France + Germany + UK + Spain + Italy + Sweden + Netherlands) when compared to USD 10484M in the US.
total nominal GDP: $16.97 trillion
total budget of the US on Military: $3.97 trillion
total nominal GDP: $18.56 trillion