I know you guys hate stuff w/o tag, but I punched in MC☆AXIS into Google and got nothing, so I can't even start to tag anything as far as character name or title goes. I did include MC☆AXIS Pinup as a tag (oops, noticed I messed up the space and made it two tags, gonna fix that asap), but aside from that, I can't tag much of anything beside M82A1 <3
As to the guns, Besides the Barrett I see what looks like a couple AR clones and a SPAS-12, Looks like the girl in the tree may have a Knight SR-25 or similar DMR and the girl on the right has a M249/Minimi Para and what I believe to be a M9.
That's Mk.12 SPR, SR25 is chambered for 7.62 X 51 and has a different RIS, i see STANAG 4079 there, which is a 5.56 X 45 magazine. and SR25 Back-up front-sight in undetachable and... TR21 scope for a DMR? FTW? the artist should've drawn TR20 considering TR21's Killing magnification rate.