(AIRSOFT) How To *EASILY* Install a Speed Trigger In A Polarstar Fusion Engine! (M4)

Installing the trigger isn't as hard as it may seem to be. If you have any questions/comments let me know in the comments section! *NOTICE* (Below) **TOOLS REQUIRED** Dremmel (Preferably one you can plug in, put on "low" speed) Dremmel kit / Accessories (i used a real low-grit sandpaper on my dremmel to very finely smooth the edges) Variety of screwdrivers PATIENCE!!!! *NOTICE* I AM AT NO FAULT TO ANY DAMAGES YOU CAUSE TO YOUR GUN. RESULTS WILL NOT COME OUT THE SAME AS MINE EVERY TIME. MODIFY WITHIN YOUR ABILITIES.