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Shadow XR920 project. Sight math, optics mounting and other brain damage
Inspired by @Biggy I put a Romeo 2 on my XR920. It's huge, but it will be a home defense/field gun so I don't care. I am trying to figure out my strategy for BUIS going forward and would like to sort a couple of things out. The factory sights, measured from the top of the slide, are .280" rear, .255" front. The built-in rear notch in the R2 is .360". As a starting point, should I factor the same .025" offset with the taller sights, or does the height-over-bore difference change the math? (Should I order a .335" front to start?)
Two things I need to figure out before continuing the path. One, am I okay with a front sight that is tall enough to function as an ice axe should I happen to fall into a crevasse? Two, can I find a dovetail blank so I can remove the now useless factory rear sight?
I now have the R2 on my XR920, a HS407CO on the MR920 (my favorite reticle of all), and an EPS Carry on the P365XL. While doing the installations, I noted that the mounting holes on the EPS carry and the R2 appeared to have the same spacing. I was not smart enough to gently attempt to bolt the EPS Carry into the DPP holes in the Shadow optics pocket while everything was apart. Does anyone know for sure if the Holosun "K" bolt spacing is identical to the DPP bolt spacing? If so, I may consider getting an EPS and fitting it with spacers front and rear to enjoy a lower deck height instead of continuing with the R2. ( @JCN )
Gun porn.
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@cornstalker the bolt pattern of the K and the DPP and the Romeo3Max / Romeo 1 are the same spacing… BUT….
The boss holes are different so if you have something with bosses they have to be ground down.
I put an RMSx on a DPP cut slide. Also put one on an R3M slide.
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@JCN
There are no bosses in the Shadow cut. Should be good to go. Thank you.
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