I've got some Meredith lenses, but I have the discontinued 'optimized for red' lenses...
They now have a broadband lens that is basically the same lens with a different coating.
It's a short focus aspheric and should be decent output...
But it will not clip the sides shorter like the AixiZ 405 3 element lens does.
It's going to be similar to the 405-G-1, but with a tad less splash, and a bit less output power...