Answers.Body: <p>This is called <a href="https://brickset.com/parts/design-32187" rel="nofollow noreferrer">Middle Ring</a>, or with the Bricklink terminology "Light Bluish Gray Technic Driving Ring Extension":</p>
  
  <p><a href="https://i.sstatic.net/MLVkC.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/MLVkC.jpg" alt="enter image description here"></a></p>
  
  <p>You can buy it <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=32187&amp;name=Technic%20Driving%20Ring%20Extension&amp;category=%5BTechnic%5D#T=S&amp;C=86&amp;O=%7B%22color%22:86,%22iconly%22:0%7D" rel="nofollow noreferrer">here on Bricklink</a>.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-11-06T17:36:22.823Z
Answers.LastActivityDate: 2019-11-06T20:06:11.957Z
Answers.LastEditDate: 2019-11-06T20:06:11.957Z
Answers.UserDisplayName: zovits
Body: <p><a href="https://i.sstatic.net/w2ez4.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/w2ez4.jpg" alt="enter image description here"></a></p>
  
  <p>Hello all, the base of the gun barrel, does anyone know which part is it?</p>
  
Tags: <part-identification><piece-information>
Title: Which part is this grey circular piece?
UserDisplayName: Έκτορας Βαλλιανάτος
ThreadText: # Which part is this grey circular piece?
  
  (Asked by: username_0 on 2019-11-06)
  
  [![enter image description here](https://i.sstatic.net/w2ez4.jpg)](https://i.sstatic.net/w2ez4.jpg)
  
  Hello all, the base of the gun barrel, does anyone know which part is it?
  
  **Tags:** part-identification, piece-information
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-11-06. Score: 6 | Accepted answer
  
  This is called [Middle Ring](https://brickset.com/parts/design-32187), or with the Bricklink terminology "Light Bluish Gray Technic Driving Ring Extension":
  
  [![enter image description here](https://i.sstatic.net/MLVkC.jpg)](https://i.sstatic.net/MLVkC.jpg)
  
  You can buy it [here on Bricklink](https://www.bricklink.com/v2/catalog/catalogitem.page?P=32187&name=Technic%20Driving%20Ring%20Extension&category=%5BTechnic%5D#T=S&C=86&O=%7B%22color%22:86,%22iconly%22:0%7D).
  
  
  ---
  
  