The Marksman trailer is linked, but not embedded, because it's age restricted for gore (https://youtu.be/uarAL-Iyf6Q). It shows off the WWII weaponry on hand in Sniper Elite 5, and many of the brutal ways those arms can be used to take down targets both from distance and up close and personal.
Rebellion is keen to boast that this entry in the franchise offers the most customizations and attachments for the weapons ever. Scopes, suppressors, stocks, muzzle breaks, materials and more - over 200 options on offer to set your load out. Most of these options are unlocked in game by finding Workbenches scattered amongst the various levels, and the attachments are more than cosmetic, but make meaningful changes to the weapon's Power, Rate of Fire, Control, or Mobility.