It is probably part of their breakdance routine.  Throw them in the air, spin around, catch the guns mid-spin, and keep going.  Very powerful if pulled off correctly.

This is Alex Ross Syndrome gone made -- and the principle reason I have mostly eschewed photo reference for human actions.

Jim Aparo creates dynamism and excitement, whereas someone nowdays would turn this into a moment of ultra-violence. There's desperation here, and the panels themselves are vibrating with Mera's outburst, but you don't expect these characters to die from this exchange. Today's "realism" would leave little doubt Mera has maimed these men.

Another great artist, Gene Colan, demonstrates panel-to-panel motion, the kind of "cinamatic" stuff most of those modern artists also seem to eschew...better to give a "respresentative" panel of action rather than show action leading to the conclusion of the action with yet another and another, on and on, I guess? But here, look at the Werewolf poised to strike, the strike, and the resultant momentum...and the fight is STILL not over, as the Werewolf kills the man (albeit the guy asked for it)