Questions on Milling a Rami BD slide for a RDS

[MeatAxe]

I’m interested in putting a RDS on my Rami BD, probably a Holosun HS507C, if possible, which I believe has a RMR footprint…questions:

1. Is it possible to mount a rear BUIS along with the 507c?

2. I notice on pics of Rami slides milled for optics by CGW that the cut made at an angle with the front of the RDS tilting downward — why is this done?

Thanks!

[Born2vette]

1. The 507c would hang over the edge a bit I would think requiring a mounting plate but doable I believe. I have a 507k on my Rami B and retained the factory rear sight.

2. I don’t know that I could tell by looking but due to the difference in barrel plane with the plane the top of the slide is in the mount requires a 1 degree tilt (and there are 1 degree shims available commercially).

A few pics of mine.










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[MeatAxe]

1. The 507c would hang over the edge a bit I would think requiring a mounting plate but doable I believe. I have a 507k on my Rami B and retained the factory rear sight.

2. I don’t know that I could tell by looking but due to the difference in barrel plane with the plane the top of the slide is in the mount requires a 1 degree tilt (and there are 1 degree shims available commercially).

A few pics of mine.










Sent from my iPad using Tapatalk

NICE!!!

Thanks for sharing that!

I’ve got both the 507k and the 507c from PA with ACSS reticles…while I prefer the bigger sight picture of the 507c, which is easier to pick up, I can see that the 507k “fits” the Rami a bit better and would make the package somewhat more concealable.

Decisions, decisions.

[Born2vette]

NICE!!!

Thanks for sharing that!

I’ve got both the 507k and the 507c from PA with ACSS reticles…while I prefer the bigger sight picture of the 507c, which is easier to pick up, I can see that the 507k “fits” the Rami a bit better and would make the package somewhat more concealable.

Decisions, decisions.

Nice selection.  I have been wanting to play with the ACSS reticle.  Love the circle/dot but am getting ready to mill my SP-01 and debating trying one.

[MeatAxe]

Nice selection.  I have been wanting to play with the ACSS reticle.  Love the circle/dot but am getting ready to mill my SP-01 and debating trying one.

As far as I’m concerned, the PA ACSS Vulcan reticle on a pistol RDS is REVOLUTIONARY (especially for those of us with aging eyes)!! Highly recommended and so much easier to acquire targets quickly.

[aslerjack]

1. The 507c would hang over the edge a bit I would think requiring a mounting plate but doable I believe. I have a 507k on my Rami B and retained the factory rear sight.

>

If you don't mind me asking who did you have mill your Rami? I asked CGW about milling my Rami when I sent another pistol to them and they told me I would have to lose the rear sight.

Jack

[Born2vette]

1. The 507c would hang over the edge a bit I would think requiring a mounting plate but doable I believe. I have a 507k on my Rami B and retained the factory rear sight.

>

If you don't mind me asking who did you have mill your Rami? I asked CGW about milling my Rami when I sent another pistol to them and they told me I would have to lose the rear sight.

Jack

A guy local to me in an Indianapolis suburb who is mostly a 1911 gunsmith. He was worried about interfering with the FPB thus why he moved it forward.  I did not intend to retain the factory sight but it worked out that way.  Was originally planning on using the notch if I had an optic failure but now have BUIS.  PM me if interested and I will give you his contact.

[MeatAxe]

A guy local to me in an Indianapolis suburb who is mostly a 1911 gunsmith. He was worried about interfering with the FPB thus why he moved it forward.  I did not intend to retain the factory sight but it worked out that way.  Was originally planning on using the notch if I had an optic failure but now have BUIS.  PM me if interested and I will give you his contact.

Well, that’s interesting. From what I’ve seen both CGW and CZC just mill off the rear sight dovetail on both the Rami and the P-01 and use mounting plates. This is a direct mount and leaves room for BUIS.

Any issues interfering with the slide innards?

[Born2vette]

Well, that’s interesting. From what I’ve seen both CGW and CZC just mill off the rear sight dovetail on both the Rami and the P-01 and use mounting plates. This is a direct mount and leaves room for BUIS.

Any issues interfering with the slide innards?

Yes its a direct mount.  No issues with 1000+ rounds since I had it milled. Wish the EPS Carry had been out when I did it as I am always cleaning the window. May put the 507k on a range pistol and get an EPS for this but $$ is a little tight this quarter.

[MeatAxe]

Yes its a direct mount.  No issues with 1000+ rounds since I had it milled. Wish the EPS Carry had been out when I did it as I am always cleaning the window. May put the 507k on a range pistol and get an EPS for this but $$ is a little tight this quarter.

That’s good to hear!

Comparing the rear of the Rami and P-01 slides, externally they appear to be about the same dimensionally: both @ 70mm from the back of the slide to the front of the extractor, both @ 19mm high. Rear sight dovetails are both in about the same spot. The Rami slide is actually wider at @ 27mm while the P-01 is @ 24mm. Unless there’s some internal differences, I would assume you can do on a Rami what you can on the P-01, milling-wise. Both descended from the original CZ75B, though the Rami took an evolutionary side step through the CZ40 / Colt Z.

Of course, the 507c is @ 44.5mm long and the 507k is @ 40mm long, so that may be the determining factor as far as what you can do.

[Earl Keese]

Scott Milam at Impact Machine did mine. The fwd cant is machined in so you don't run out of elevation adjustment. I don't care about irons on a pistol this small so no rear sight for me. I wanted it as deep as possible so it did get into the FPB channel, I install the FPB spring from the top side when I install the dot. I'm super happy with how it turned out, Scott knows his way around CZ's that's for sure.

[Born2vette]

Scott Milam at Impact Machine did mine. The fwd cant is machined in so you don't run out of elevation adjustment. I don't care about irons on a pistol this small so no rear sight for me. I wanted it as deep as possible so it did get into the FPB channel, I install the FPB spring from the top side when I install the dot. I'm super happy with how it turned out, Scott knows his way around CZ's that's for sure.

I was surprised when the rear sight dovetail was there when I picked it up.  Was not what I expected but its a great little pistol and works fine.

[Earl Keese]

More than one way to skin a cat, as the saying goes. When I had mine done, the 407/507K wasn't available yet so I went with the RMR cut. I had a battery die during a match(on a 365xl) and finished without the dot. Wasn't that big of a deal, so I'm ok without BUIS.

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