I designed these bullet effects in Unreal 5.4.2 for my latest project. It includes the bullet, muzzle flash, hit explosion, Niagara particles, and all related/required files including corresponding materials, textures, blueprints, and demo meshes. The muzzle flash is comprised of 4 different effects working together: sparks, smoke, fire shape, and explosion. The hit effect is comprised of 3 effects working together: smoke, fire, and sparks. The particles use 3 animated materials for the effects, and 6 textures are included which can easily be swapped out for others if need be. Particles have been set up so that the size can be adjusted outside of Niagara through blueprint instantiation by means of the 'x' value under size.And, the effects are easily adjustable with simple to control color values that can be altered for different style and weapons. Their fairly simple and straight forward, but the simplicity makes them easy to maintain, upgrade, and mutate for a variety of different types of weapons. They've served me very well so far, and I hope they can do the same for you -