A charging handle accessory has an upper portion with a pair of parallel, spaced-apart sidewalls connected at their upper extent. The upper portion is configured to be assembled over an upper portion of the charging slide. A lower portion has a pair of parallel, spaced-apart sidewalls connected at one end. Each of the sidewalls of the lower portion has a lip configured to engage a lower extent of the charging slide. A sliding connection is provided at the lower extent of the upper portion and the upper extent of the lower portion, wherein the upper and lower portions are coupled together in sliding relation. A fastener extends between the upper and lower portions to secure the upper and lower portions against sliding relative to one another and secure them on the charging slide of the firearm.