As i told you via PMs, you can get a 532nm module to fit in almost any host. The module is 11.9mm and the heat sinks in these host are meant for a 12mm module so YES they will fit. However the problem you run into is how far out the front will the module stick. Slightly confused why you are asking this question when I answered it at least 2 or 3 times to you last night via PM.
To sum it up; a 532nm module will fit in either the SR, C6, 501b or similar laser. Also good luck finding a true 5mW module to put in it. If Blord said he can build one, then go with him if you dont feel comfortable building your own.
EDIT: just to prove my point, check out THIS thread. EVERY one of the lasers posted by Pman are 532nm modules inside various hosts and as ive said, most are way over the stated 5mW spec. I dont think he has received one 5mW module
Last night I understood you meant that about the C6 and not this one. Maybe I misunderstood what you said. Anyways, in this thread I'm asking if it fits as in the image, not having the module protruding far out the host head.
And yes, I will be buying a custom one from Blord as soon as he returns from vacation. We have discussed terms before he left and he really seems like a reputable laser builder.