This is a NOS (New Old Stock) Glock OEM Gen 1 & Gen 2 Guide Rod (originally called the, "Recoil Spring Tube") for Gen 1 and/or Gen 2 G19 and the Gen 2 G23 pistols.  These are super hard to find apart from the recoil spring. This one is NOS that I received with an April 1989 receipt. The receipt is not included.
 
The diameter of the guide rod tube is the correct factory specs and measures just shy of 7mm or just a hair over 1/4 of an inch. 
 
This is for someone who only needs a Gen 1 or Gen 2 guide rod and not the spring.
 
I do not have any factory packaging or papers for this item. It will come shipped in a zip lock style plastic bag.
 
Please see the high resolution photos for condition. 
 
I will combine shipping on multiple purchases.
 
Thank you for looking.