Jump to content

Cleaning My CZ 70 and noticed this

Recommended Posts

I bought this gun (used and as-is) a couple years ago but never fired it because there was no magazine.  Well I finally found one and decided to clean it.  When I took it apart, I noticed there's some scratches (not deep but noticeable) in the slide.  You can see them in this pic (just left of center) and some obvious rubbing.   Neglect?  Normal wear from ejection?  Never had a gun this old so who knows how many rounds were put thru it.  Thinking I should just clean it and try it out...



Link to post

Looks like "machining" marks to me.  A lot of guns don't polish the insides of unimportant areas and so it looks just like it did when it came off the cutting machine that made it.   Its harmless, if ugly.    I'd check that shiny streak on the right... that slides across each round and it looks (could be dirt, or whatever) like it has a rough spot.  If so, polish that out. 


After shooting, some guns will have that area of the slide rubbing the barrel a bit and youll see the wear marks.  If its rough there, polish it.  The gun will tell you.  As you shoot it, it will knock finish off and burnish the areas that are rubbed every shot.  If you find a burnished area that is rough, cleaning it up will smooth out the operation -- sometimes by a LOT.  Shooting it 1000 times will do it for you eventually but if its new I just go ahead and knock it down myself, esp when I can feel it.

Edited by Jonnin
  • Like 1
Link to post
Normal machining and wear with regards to that shiny streak. Common to all semi-autos. Maybe put a dab of oil or grease on the streak.

Load it up and enjoy. CZ 50's are excellent little pistols.
  • Like 1
Link to post

Thanks for the info. :up:  Any recommendations on what to use to polish the rough spots?


It really depends on how bad it is.  I use dremel polish, diamond dust, and very fine grit sandpaper for most jobs.  Once in a while its bad enough that I use something rough...  but that should be avoided in general.  You should be able to drag whatever you are using across your skin without being scratched for most jobs...  and avoid power tools for most jobs (tempting but they make things uneven).

Link to post
Guess it's not that bad as I ran my finger across it and it's not rough. Just looked that way. I'll clean it and put some rounds thru it. Thanks again for your help.
Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


Tennessee Gun Owners (TNGunOwners.com) is the premier Community and Discussion Forum for gun owners, firearm enthusiasts, sportsmen and Second Amendment proponents in the state of Tennessee and surrounding region.

TNGunOwners.com (TGO) is a presentation of Enthusiast Productions. The TGO state flag logo and the TGO tri-hole "icon" logo are trademarks of Tennessee Gun Owners. The TGO logos and all content presented on this site may not be reproduced in any form without express written permission. The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff.

Before engaging in any transaction of goods or services on TGO, all parties involved must know and follow the local, state and Federal laws regarding those transactions. TGO makes no claims, guarantees or assurances regarding any such transactions.

  • Create New...

Important Information

By using this site, you agree to the following.
Terms of Use | Privacy Policy | Guidelines