i don't know for sure but that most likely will not work.
You may be looking for something like this http://www.airsoldier.com/mm5/mercha...HERACCESSORIES
You could screw a solid 1/8npt threaded pipe into the end rather than a gauge. you could attach a pump to that and a pump rod to the back block. you will need to make your own parts no autococker kit will work but you could probably modify cocker pump parts to work.
You will also need to shut off the re-cock pressure completely. i would remove the valve and plug it with jb weld or something
I've never done an omen pump myself but have been thinking about it. i've got 2 working omens and one that is parts.