There is a loophole that's not widely known. You cannot get a full sleeve, but there is a specified percentage of surface area below the "sleeve line" which can be inked. (or something to that affect)...They are strait up dbags here my CO and 1sgt are both pogs who memoriezed MC orders and enforce them harshly on the only grunts in the whole company.....They burned one of our guys who had 5 days left for tattoos last 96...then again he didnt really care about one more NJP and a reduction in rank for 5 days..
oh and im in 29 with 7th Reg Gunners Cadre now
IDK specifics but after I got hurt and stuck in an admin office for several months while rehabing I learned of few things from those POGs, LOL. Might be something for you to look into. Read the regulation for yourself rather than take your command's word for it.
I know there were a few of those admin Marines getting some limited ink on their arms without repercussions, but that's not to say your command won't come down on you...