I bought the Hakko version,

and have it on my Cutlas. Probably the version you've prdered will work as well, for lots less money...
I used mine on a rimfire rifle for a coupla silhouette shoots.....then stuck it on the cutlas. The main problem I've found with the Hakko is this: No markings on either elevation or windage for reference, (till I added them). They are allen head screws, so you must count turns and listen(very) carefully for the clicks..That said, optics are sharp clear to the corners, and the 4 different reticle patterns are sharp at lower intensities, distorting only at brightest settings.