Privacy guaranteed - Your email is not shared with anyone.

Welcome to Glock Talk

Why should YOU join our Glock forum?

  • Converse with other Glock Enthusiasts
  • Learn about the latest hunting products
  • Becoming a member is FREE and EASY

If you consider yourself a beginner or an avid shooter, the Glock Talk community is your place to discuss self defense, concealed carry, reloading, target shooting, and all things Glock.

What is the 45 in 5.56x45mm?

Discussion in 'Reloading' started by wdphillips, Nov 17, 2011.

  1. I was asked by my son, "what is does the 45 in 5.56x45mm stand for?". I am embarrassed to say that I could not answer the question.

    After 30 minutes of searching I still cannot answer the question!

    So I will ask the experts.

    What is the 45 in 5.56x45mm?
  2. the lenght of the case in millimiters, which is 4.5 centimeters.

  3. GioaJack

    GioaJack Conifer Jack

    Apr 14, 2009
    Conifer, CO
    ... equal to the length of your private part. What an amazing coincidence. :whistling:

  4. According to the specification the length of the case is 44.70mm. Being an engineer I did not round up.

    Should I?
  5. That is what happens when you get old. It hides!:embarassed:
  6. After you fire, the case will round up by itself to 45mm.:supergrin:
  7. G21FAN

    G21FAN Useless loser Millennium Member

    Apr 23, 1999
    Pell City, Alabama
    Ornery today Aint ya?
    Last edited: Nov 17, 2011
  8. Hogpauls


    Nov 6, 2009
    Umm, how might you know this information?
  9. PCJim

    PCJim Senior Member

    Aug 4, 2008
    One huge scandal in college football two weeks ago with another initiated today, and now one on GT?