^Wolverine briefly uses a Browning M2HB on a Humvee to shoot at the helicopter.
^Col. Striker flashes his M1911A1 in his shoulder holster to intimidate Silver Fox.
^Men at the Island fire AKMs at Emma Frost. In theaters I couldn't ID these at all.
^M&P soldiers arrest Striker, armed with M16s. They look like A2s, or A1s with A2 handguards. Both would be anachronistic to 1979. The gun ontop the vehicle looks like an M2HB.
And now the best for last...