UZI Talk Forums
+ Reply to Thread
Results 1 to 2 of 2

Thread: FNC Headspace question

  1. #1
    Registered User
    Join Date
    Mar 2018

    FNC Headspace question

    I'm hoping someone can help me out. I bought a set of Clymer .223 Go/Nogo and 5.56 Max/Min headspace gauges. They work great on several AR's, an Austrian AUG, and an IMI Galil.

    Why don't they work on FNC's? I tried this on three different FNC's, including one I have taken out and fired with no issues. In all three cases, the bolt refuses to close on the Go gauges. Is it a difference between CIP and SAAMI chamber dimensions? I asked PACO recently and hope to hear back but I am at a loss.

    Does anyone have any specifics on FNC chamber dimensions? Maybe someone has drawings of the upper and lower receiver with dimensions?

    Also- Is there a reason Howco's seem to be more expensive than Steyr or Gunsouth FNC's?

  2. #2
    Registered User
    Join Date
    Dec 2005
    Here you go

    mini 37.89mm
    Maxi 38.11
    reject 38.15mm

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Please consider becoming an UZI Talk Supporter.