Did a quick picture guide, it's a very easy process.
thanks much!!! so i guess this begs a new question. first, why would Zenith leave a die (centering) tool left in? wouldn't they have to keep replacing them to manufacture the next gun? maybe they just keep a centering tool for every gun made which is horrible for being cost effective. Also, if mine has one, would you guys suggest taking it out so long there is concentricity; if not, would you advise leaving it in to ensure the barrel is aligned correctly if the "free floating" throws off the grouping when shooting the weapon? *hope this made sense*
As long as the cocking tube does not contact the sight post, I see no way it would possibly negatively affect accuracy. The sight post is attached to the barrel and if it doesn't get thrown off by the cocking tube it'll always be accurate to where your bullet is going. I left mine out as I see no reason for it being there. If your cocking tube is crooked without it that may be reason enough to leave it in though.
Just be sure to put the cap back on afterwards.
Haha, great tutorials Dragnet! Hahaha
It is seriously needed as this is something that came up and has us all scratching our heads.
My Z-5P does not have the spacer, appears to be concentric. I don't know how to tell the date, but I bought it new just a couple months ago.
I wouldn't be surprised if Zenith was putting them in after importation to "fix" crooked cocking tubes... it seemed to be a common problem on the first guns and was contributing to hard-to-charge guns.
Took mine out and the cocking tube was slightly canted, so I put the spacer back in. In a 9mm SBR I'm not worried about free floating a barrel...