User blog comment:Bovell/Kotaku claims to have MW3's first look. Robert Bowling responds. (Minor spoilers)/@comment-1866089-20110514190019

so far after looking through some of the "leaked" content, i've seen the following guns: (i am good at recognizing guns, any errors are likely typo's such as A2 vs. A3 etc.) M4A1, MP5 (not the MP5K), FN FAL, FN SCAR (unknown H or L), Remington ACR, AKM (or AK-103), vz. 63 Skorpion, M14 EBR or EMR, Remington RSASS, model 1887 (heavily updated exterior), Walther P99, Barret M107, "new Striker", M320 GL, AA-12, Kel-tec KSG, MP412 revolver, G36 (K or C model) thats all i can for sure say have been seen in the leaked content, no promises on actual release selection