CZ 527 PICATINNY RAIL

[308rws]

Instead of fitting a 'budget' 1" scope to a CZ 527, I'm considering the pros and cons of fitting an aftermarket picatinny rail in order to utilise scopes from my other rifles.

I'd appreciate hearing other CZ 527 owners experiences WRT picatinny rail options and any advice?

Thanks

 

[User00044]

Instead of fitting a 'budget' 1" scope to a CZ 527, I'm considering the pros and cons of fitting an aftermarket picatinny rail in order to utilise scopes from my other rifles.
.
I'd appreciate hearing other CZ 527 owners experiences WRT picatinny rail options and any advice?

Thanks

Fit one and use low mounts . I have a Britannia rail fitted and use Leupold QRW rings .

 

[308rws]

Fit one and use low mounts . I have a Britannia rail fitted and use Leupold QRW rings .

Which of the Britannia rails do you use?

 

[flatliner]

I use a Barton Gunworks rail on mine, allows me to swap between a nv unit and a day scope fitted with Leupold QRW rings

 

[kenbro]

Not sure which make my rail is but it’s pulled up in the dovetail with a series of tiny socket head screws.
Been chasing my tail for a week thinking my night vision wasn’t holding zero.
Still reasonable 3 shot groups (Yeh, 3 is a group ) but moving around poa a little bit from one day to next.
Back to basics and removed the looong extended mount.
2 of tiny screws were not as tight as they where when first fitted so had worked loose through use.
I’ve put a drop of nail polish on top of each screw.
I have the correct proper stuff but don’t like using it unless absolutely necessary.
I refitted the sight without the long extended mounting bracket so now have to stretch my neck a bit when shooting.
Sight is a Wraith K Mini and it’s okay but can’t compete with a traditional scope…until nearly dark.
Ken.

 

[kenbro]

PS. I think there is a notch out of the back part of my dovetail, (Can’t see it with rail in place) no idea why, but one of fixing screws goes into nothing.
Ken.

 

[flatliner]

PS. I think there is a notch out of the back part of my dovetail, (Can’t see it with rail in place) no idea why, but one of fixing screws goes into nothing.
Ken.

I've the same notch in mine,always assumed it was for a recoil pin

 

[User00044]

Which of the Britannia rails do you use?

Sorry, didn't see your reply.
10 MOA

I've the same notch in mine,always assumed it was for a recoil pin

It is !

Apologies for the slightly out of focus photo . Hopefully, you can see the screws and the one that locates in the recoil lug rebate .
I screwed the recoil lug / screw then gently tapped it forward with a rubber mallet before fastening the others .
The colour match wasn't as seen , that's Cerakoted as per the rifle .

Hope this helps .

 

[kenbro]

Ah,

 

[308rws]

So, there appears to be 2 different rail mounting designs. One which clamps the picatinny to the side of the 16mm dovetail groves (like scope rings). The other which uses ‘grub’ screws to lift the rail above the dovetail, thereby clamping it into the groves. I’d have thought that if you’re mounting anything heavy onto the rail e.g. NV or TI then the side clamp design would be more robust than relying on grub screws? Or, am I missing something?

 

[User00044]

So, there appears to be 2 different rail mounting designs. One which clamps the picatinny to the side of the 16mm dovetail groves (like scope rings). The other which uses ‘grub’ screws to lift the rail above the dovetail, thereby clamping it into the groves. I’d have thought that if you’re mounting anything heavy onto the rail e.g. NV or TI then the side clamp design would be more robust than relying on grub screws? Or, am I missing something?

I can't comment on the other design , the one fitted to mine required retightening after initial fitting . It hasn't moved since and has had my N470 fitted without problem.
Hopefully, others will share their experiences .

 

[Oracle]

PS. I think there is a notch out of the back part of my dovetail, (Can’t see it with rail in place) no idea why, but one of fixing screws goes into nothing.
Ken.

The Kozap Weaver rail manufactured for the CZ 527 has a recoil lug built in which mates into the indent on the dovetail. The rail fore/aft clamps into the existing dovetail with 3 hex screws. Had one on my .222 for years. Rock solid; only downside it did increase the rail height approx 10mm so careful choice of ring height had to be taken into account.

 

[Lancaster]

I've had both.
The Britannia rail sits nice and low, once fitted doesn't move and looks fairly integral to the rifle.
The Kozap is higher and bulkier, looks like a bolt on accessory and, as above, makes ring choice more important because of the height.
I sold the two Kozap's that I had and now just use Britannia rails.
Ring height can be a pain with the CZ527's because of the bolt design, so instead of bggring about I prefer the Britannia and medium mounts for most scopes.
NV mounted on my .222 with a N470s, not exactly a lightweight scope, no issues at all even when swapping day to night with QD rings.

 

[billy_boyle_2010]

Brittania rail here on a 17 hornet. Seems to do the job

 

[308rws]

So the Britannia rail: Britannia Rails CZ527 Picatinny Base Rail Adapter 2-0018 and the Reed Resolution rail advertised by Optics Warehouse : REED Resolution CZ 527 Aluminium Low Profile 0 MOA Picatinny Rail appear to be exactly the same design. Although, the Optics Warehouse one seems to have the word APEX on the ejection inlet?

I cannot find one listed for the CZ 527 under Braton Gunworks: Barton Rifle Rails

 

[tim@tcs]

You can get 30 mm rings for the 527

 

[308rws]

You can get 30 mm rings for the 527

I need to be able to swap around scopes and NV from other rifles.

 

[flatliner]

So the Britannia rail: Britannia Rails CZ527 Picatinny Base Rail Adapter 2-0018 and the Reed Resolution rail advertised by Optics Warehouse : REED Resolution CZ 527 Aluminium Low Profile 0 MOA Picatinny Rail appear to be exactly the same design. Although, the Optics Warehouse one seems to have the word APEX on the ejection inlet?

I cannot find one listed for the CZ 527 under Braton Gunworks: Barton Rifle Rails

This is the rail I bought from them, but it must be 4 or 5 years ago now. I haven't had any issues with the grub screws coming loose, and I can change between day scope and nv without losing zero.

 

[Overlay]

Tried the Brittania mount with three screw fixing didn’t work to well so I ordered some from America, 11 mm picatinny blocks that had double alan key fixing put them on my 11 mm rail and they never shifted at all, maybe worth seeing if you can get a pair of those first they work extremely well.

 

[308rws]

The lowest profile aftermarket Picatinny Rail I can find for the CZ 527 is one of these:
Low Profile CZ 527 & Tikka T3/T3x Picatinny Rail - 16.5mm Dovetail to Picatinny