New assault rifle for some units of the british army

[CINDERS]

However, from what I've seen, the £90m order for these new L403A1's is initially only for 1,640 rifles, with an option to acquire a further 10,000 falling under a new £90m contract over the next decade.

Is it a one of with $90M and the second lot of 10,000 units falls under that initial contract as you say $90M for initial 1,640 then a further 10,000 falling under a new $90M contract!

$180,00,00 came from 1st phase $90m 2nd phase new contract $90M = that figure
Either way someones raking in the coin