during WWII, soldiers often placed photos of their loved ones under the clear grips of their 1911 pistols, a practice that led to these grips being called "sweetheart grips". sweetheart grips are custom handgun handles that became popular during the world wars, specifically WWII. soldiers would personalize their grips with photos of loved ones or unique designs as a reminder of home. made from materials like wood or plastic, these grips were a way to boost a soldiers spirit during combat.