Quote:
Originally Posted by tankbarrell
Not according to the manuals. The 57mm M1 gun used a bigger box so you're probably correct for that. The M18 scope is over a foot long though isn't it? Not sure how you fit that in a 6" high box....
The 6 pdr box had the small spare springs and pins box in the square hole, what went in the round hole? It's not deep enough to take a firing pin spindle and it's not clear what the larger rim is for.
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The original small one that a buddy has, has a hole through the bottom of the box, and the M18 scope hangs down through the bottom, so he says. I have not tried to fit the scope in it. It looks like the one shown above has a hole in the bottom of the box. I have a early 57mm, and the early M1 is shown with the size box you show. I have a original large box for mine, but I am trying to swap it for the early type box. Both fit the holes in the right hand shield.
US Manual FM 23-75 dated June 44 shows 6 drawing of the small box on it, a Canadian parts manual dated 1943, shows small box, British pt # C54666 US pt# 01-24526. Not sure if they are different or not. US manual TM 9-303 April 44, shows the small box about 8 times, BUT, I have not been able to find a photo/drawing of the scope being mounted in one.
Most the war time photos of WW2 US 57mm that I have seen have the large box mounted. I saw one showing the early box, but it was a training photo, and not a combat photo.
Has anybody found any manuals showing the small boxes documented use?