Rebellion worked with renowned military historian and star of the Combat Dealers TV show, Bruce Crompton as well as the Imperial War Museum and Royal Armouries Museum to capture thousands of reference images and audio recordings of World War 2 weapons and vehicles to help ensure maximum authenticity.
Sniper Elite 5 offers a level of customisation never seen before in the Sniper Elite franchise, you will be able to change a weapon’s stock, magazines, receiver, barrel, scopes and iron sights as well as the materials. This will also enable you to finesse your weapons to best suit your playstyle, whether that is stealthy and methodical, ‘run and gun’, or a mixture of the two.
Customisation options can also be accessed in-game once you have discovered the workbenches in each map; each discovered workbench will unlock further customisation options.

Sniper Elite 5 Spotlight - Weapons and Customization