The new D-Day -British and Canadian campaign book provides the German player a new tool for their box of hurt, the 3.7 cm Flak Zwilling 43. The first twin heavy auto cannon available in BA. The 3.7 cm Flak 43 was an anti-aircraft gun which was primarily mounted as a single gun and also used on many vehicles. However a more limited dual gun mount was produced as both field mounts and fixed mounts on flak towers. This model is offered in Bolt Action as a heavy AA gun, a fixed weapon, with a crew of 4. The cost is 70 points as a regular, the gun shield is an extra 5 points.
Deweycat Productions has developed both a resin and FDM .stl pack for this design which is now available at wargaming3D.
You can find more information on the gun at: https://en.wikipedia.org/wiki/3.7_cm_Flak_43