will not affect the production of light if contacted with the chemiluminescent components fig8 a 8e represents illustrative embodiments of membrane attachment methods one or more of membranes 215 216 or 217 can be attached to the projectile via heat sealing directly to shoulders 220 formed within the side walls 204 and 205 see fig8 a to a cylindrical element 221 with shoulders 222 see fig8 b or without shoulders 222 see fig8 c or through use of sealing lips or flanges 223 molded into the projectile body see fig8 d fig8 e illustrates sealing of membrane 215 directly into the side walls 204 and 205 upon impact with the target chemiluminescent reaction activator element 211 is released from the base plate 206 resulting in motion toward first leading end 202 chemiluminescent reaction activator element 211 is made of a material strong enough to puncture the membranes thus allowing intermixing of the chemiluminescent reactant components marker materials inert filler or combinations thereof the configuration of the chemiluminescent reaction activator element 211 may be adjusted for different desired functionality for example a larger diameter chemiluminescent reaction activator element could act as a piston and forcibly move the chemiluminescent reagent mixture forward where it could then be expelled through one or a more apertures not illustrated located within the perimeter of the projectile it is to be understood that while a certain form of the invention is illustrated it is not to be limited to the specific form or arrangement herein described and shown it will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited.