Results 1 to 6 of 6

Thread: M39 front sight replacement procedure

  1. #1
    Join Date
    Dec 1969
    Posts
    7,656

    Default M39 front sight replacement procedure

    I want to put a higher front sight on my M39.

    Is there a procedure to do this? Our do I just unscrew on of the screws on the side
    of the sight ears?

    Does anyone know why these rifles shoot high? Is it cause Finn ammo was different
    than Mosin ammo we get surplus these days?

    Thanks
    Skip

  2. #2
    Join Date
    Dec 2008
    Location
    Eastern part of Finland
    Posts
    74

    Default

    You only have to remove the right side screw and then replace the sight, and yes the Finnish ammo is that much slower, thats why they shoot high, the Original ammo that the M39 was designed is loaded with a 13gram or 200grain D166 boattail bullet that has only 680 to 720 meters/s velocity, and most of the surplus ammo is loaded with russian type bullets such as LPS that is only 9,7 grams and 820 to 880 meters/s velocity and it has a more straighter trajectory because of the higher speed.
    VKT M39 1941
    28/30
    91/30 PU
    27-66 ASEV 1
    28-76 ASEV 1
    TAK-85

  3. #3
    Join Date
    Mar 2009
    Posts
    328

    Default

    Very easy to do. DO NOT MESS WITH THE SET SCREW AT THE BOTTOM REAR OF THE SIGHT.

    Actually it is beyond easy, routine, comes to mind.

    lln

  4. #4
    Join Date
    Dec 1969
    Posts
    7,656

    Default Thats why

    Thats why I asked. I knew there was something not to touch in this action .

    Many thanks guys.

    skip

  5. #5
    Join Date
    Dec 1969
    Location
    Minnesota
    Posts
    544

    Default

    Thanks - this answers a question I asked about adjusting the site on another thread.

  6. #6
    Join Date
    Feb 2009
    Posts
    511

    Default

    Just an observation; Sometimes the front (replacement) blade can "rock" (rotate around the adjustment screws) sligthly when the adjustment screws are loosened. Pay attention to the rotational position of the blade prior to loosening the screws and set the position the same when tightening or a shift in elevation may occur.

    If the blade rocks, I try to keep it in an easily reproducible position, such as all the way back when making side-to-side adjustments on the range.

Posting Permissions

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