perhaps few of them war T2 multitools, i myself have sometimes hard time seeing the difference when i have a full cargo box of them…luckily, they get auto-sorted when you put them in OCD
as for the contract it self, you could try using assault rifles instead, the raw material cost is same, you only use iron for them instead of silicon…the downside is that you have double the production time for them (15sec instead of 7.5sec)…