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  1. #1
    Premium Member
    Join Date
    Apr 2010
    US of A
    Thanked 925 Times in 438 Posts

    U.S. Army Gun Bore Sight Kit Type J-2

    Was given this interesting set. The inside label notes use for .50 cal, 20mm and 37mm. I suspect this set was mostly used by the USAAF during WW2, considering the calibers. The sight has a simple crosshair and is foggy from being 75 years old but is still clear enough to see through. Some online research also brought up a Type J-1 kit with a larger variety of caliber adapters. These kits do not appear to be very common. I'd never seen one before.

    bore sight.jpg bore sight 4.jpg bore sight 3.jpg bore sight 2.jpg
    Better to remain silent and be thought a fool than to speak out and remove all doubt.

  2. The Following User Says Thank You to Slick For This Useful Post:

    sksvlad (12th March 2018)

  3. #2
    Senior Member
    Join Date
    Apr 2014
    Thanked 460 Times in 194 Posts
    I have had several. I use them to bore sight my 37mm cannons when shooting. The US Air Force released a bunch in Texas in the 90's; however, I have not seen one in a long time. A 37mm shooter will pay you $250 for that set. I sold my last one some time ago. I now use a modern 20mm set that has a higher magnification in the optics. However, it still fits the same 37mm adapter.

    I have attached a photo of my father helping me to bore sight the 37mm on my M8 armored car on his ranch in Texas before a shoot back in 2006.
    Attached Images Attached Images
    Last edited by M8owner; 11th March 2018 at 11:44 PM.

  4. The Following 2 Users Say Thank You to M8owner For This Useful Post:

    sksvlad (12th March 2018), Slick (11th March 2018)

  5. #3
    Senior Member
    Join Date
    Mar 2015
    new zealand
    Thanked 176 Times in 73 Posts
    I have the us navy version of that kit which is slightly bigger and has one for the 30 cal as well.i have used it to aim my 20mm hispano and it proved very accurate and saved wasting ammo.all the navy ones ive seen are always missing the 37mm sight for some reason.




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