According to the documents above, the MG34/42 telescopic sight was good out to 3800 yards, and the Vickers Tangent sight was good out to 3700 yards.
Here’s the Vickers with Tangent sight:
One possibility would be to have a MMG and HMG version of the Vickers.
1. Vickers MMG with leaf sight. Range 30
2. Vickers HMG with Tangent sight. Range 40
Cross