Hi everyone, I posted in the new section but thought I'd post here too.

I'm new here although I'm not new to handguns. But I cant seem to figure out what type of battery my laser takes. I bought a Wildey .45 Win MAg with this laser mounted on it about 15 years ago, it didnt have a battery then and took it off since, but now I'm wanting to put it back and I cant find any info on PRIMEPOINT, probably out of business or changed names. Wondering if anyone might know what type of battery or batteries it might take. The battery space is approx. 5/8" Dia x 2"

Thanks for any help out there.