make it an optional zoom, much like how the level 2 HR zoom is activated by pressing X. Have this do the same. So that you aren't forced to zoom in super close into a wall when trying to take guys in close-range with a pistol. Having it work with the El Diablo isn't bad either.
TBH: I would roll with PAZ if it worked with the bow.
Fight Me irl.
I have Shrek on my side.
~ Billy, from Grim Adventures Of Billy And Mandy