system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] R2 and Anakin seem really close. Why didn't Anakin -- someone who regularly went to battle -- upgrade R2 with more offensive capabilities and/or the ability to speak basic?

Imagine R2 with blasters and thermal detonators...
gpt
Droids without weapons can pass through security checks far more easily. 

R2 was far more versatile at covert tactics than he would have benefitted by carrying weapons. No one would suspect an R2 unit to be as adept as R2-D2 was. But if he was detected to have weapons, that would be the end of him.  And, as it happens, R2 survived decades just fine without them.  

Also, why would R2 need to speak basic? Another add-on that would just draw more suspicion as to why an R2 unit had that ability.  Besides, Anakin can understand him just fine.