Improve your Tacticool! Minimize the main mag release and accentuate the Mag Adapter release on your Dart Zone Adventure Force Nexus or Aeon Pros! This kit includes two mag release adapters and a spacer or slop remover! The spacer may be used on the Nexus Pro spring to increase your FPS and may also be used to remove full length capability on the Aeon Pro! The slop remover ensures your Aeon will be solely half length ready and primed for peak power and performance.