40 mm Bofors AA guns made in GB and US

[Stellan Bojerud (RIP)]

Thank you for Steyr - Bill!

I have got a lot of help with finding out details about the Bofors guns. So now I am down to the wheels (see also thread on Softskin forum).

The carriages measures:

GB Mk I, US M1 and M2
Lenght 5200 mm
Width 1820 mm
Free space 440 mm
Wheel diam 860 mm


GB Mk II and Mk III
Lenght 6390 mm
Width 1720 mm
Free space 220 mm
Wheel diam 780 mm

The first 40 mm Bofors mobile guns were ordered:
1935 July. Austria 8 pcs.
1935 Aug. Belgium 8 pcs.
1935 Dec. Poland 60 pcs.

First delivery with 8 pcs to Belgium and 4 to Austria was made in 1936. 48 guns were delivered in 1937 of which 4 to Austria and 44 to Poland.

This is a delivery photo from Bofors 1937. It seems likely that it is a gun for delivery to Poland.