If you already own the base game but want the DLC for free, that’s not possible without piracy. However, Rebellion has released free weapon packs occasionally as limited-time downloads – check the eShop under "News" for past promotions.
: Patch 1.20 was recently released to address loadout bugs, medal tracking, and weapon damage balancing. Updates are typically free and can be installed by pressing the + Button on the game icon and selecting Software Update > Via the Internet . Paid DLC Packs sniper elite 4 switch nsp update dlc free