Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Question for 1911 fans

Discussion in 'Gunsmithing and Repairs' started by Jim K, Feb 12, 2012.

Thread Status:
Not open for further replies.
  1. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,611
    OK, for those who think they really know all the ins and outs and whys and wherefores of the 1911 (original one, not some modern copies):

    Why does the M1911 have a barrel bushing? And why doesn't the Browning High Power have one? Hint: The second question is a trick question.

    Jim
     
  2. rcmodel

    rcmodel Member in memoriam

    Joined:
    Sep 17, 2007
    Messages:
    59,082
    Location:
    Eastern KS
    I think they ran out of barrel bushings by 1935?

    Or maybe not??

    rc
     
  3. BBBBill

    BBBBill Member

    Joined:
    Mar 7, 2005
    Messages:
    1,880
    Location:
    Alabama and Florida
    The barrels remove differently. Barrel is too large in diameter on the 1911 to come out the bottom, so it had to come out the front and there were no bull barrels on the horizon back then. And there was a late prototype Hi Power that had a removeable bushing. ;)
     
  4. Mizar

    Mizar Member

    Joined:
    Mar 23, 2004
    Messages:
    657
    Location:
    Sofia, Bulgaria
    Just guessing - a clearance for the tools required to machine the breech face, locking lugs and etc.?

    Boris
     
  5. 1911Tuner

    1911Tuner Moderator Emeritus

    Joined:
    May 22, 2003
    Messages:
    18,550
    Location:
    Lexington,North Carolina...or thereabouts
    Well...I know what the bushing does, but if there's a secret reason, let's hear it.

    It's a pivot point for the barrel. It serves as an abutment to capture the spring. As Bill noted...it allows barrel removal from the front. And it keeps the muzzle end in closer alignment with the slide without having to contact it. (Wear and accuracy) And I use the bushing to depress the plunger to install the thumb safety after a no-tool detail strip.
     
  6. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,611
    Mizar is correct. The bushing may have advantages, but the real reason for it is that machining the breech face and the locking lug seats require a boring bar and end mill as large as the back end of the barrel. So the hole needs to be larger than the front of the barrel, and the bushing fills the gap. (Some "shorty" pistols now have large barrels that fill the gap without a bushing, but to make a regular 5" barrel that thick would add too much to the weight of the pistol.)

    OK, so what about the BHP? (Remember, that is the trick question.)

    Jim
     
  7. Mizar

    Mizar Member

    Joined:
    Mar 23, 2004
    Messages:
    657
    Location:
    Sofia, Bulgaria
    Mr. K., you mean - why is it silver soldered to the slide, or...? :)

    Boris
     
  8. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,611
    The "trick" part is that the BHP does have a bushing, it is just not removable. It is screwed in (not soldered) and is kept from turning by the front sight post. It is intended to be a permanent assembly, though BHP pistolsmiths do remove them on occasion.

    Here is a picture of one.

    Jim
     

    Attached Files:

  9. Walkalong

    Walkalong Moderator

    Joined:
    Nov 20, 2006
    Messages:
    46,707
    Location:
    Alabama
    Interesting.
     
  10. Mizar

    Mizar Member

    Joined:
    Mar 23, 2004
    Messages:
    657
    Location:
    Sofia, Bulgaria
    My mistake. But i believe that Mk III's have a soldered in bushing, because of the different front site - dovetailed in. And I can see a yellow line on the inside of the slide. Thank you for the information, Mr. K - now I will try to butcher one Nazi era beater belonging to a friend of mine - it has very loose barrel to bushing fit.

    Boris
     
  11. larryh1108

    larryh1108 Member

    Joined:
    Aug 29, 2008
    Messages:
    2,389
    Location:
    NC
    I have an Inglis slide with the bushing missing. Any idea where I can find one?
     
  12. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,611
    Sorry, but that bushing was considered a permanent assembly in the slide and AFAIK no spares were available. Just on the off chance, you might contact Browning (US) or FN, but you might end up having to have one made. Another thought is Marstar in Canada; the BHP was the Canadian service pistol and they might have parts that are not available here.

    Jim
     
  13. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,611
    Sorry, I don't. That bushing was considered a permanent part of the slide and AFAIK, no spares were ever available. I checked Marstar (Canada) on the off chance that they might have the part as the BHP was the Canadian service pistol, but struck out. You can probably have one made by anyone with a metric thread lathe; it should not be a hard job.

    (The bushing shown in the picture is not mine.)

    Jim
     
Thread Status:
Not open for further replies.

Share This Page