Hey guys! I recently purchased the WE-Tech Gas BlowBack Open Bolt HK416/M4-SOL from evike. I've been customizing it to my likings and I've been seeing pictures of the gun having a shortened outer barrel(outside the Rail system). I researched and figured out that it is removable but there is a small pin in the bottom of it right next to the rail, and couldn't figure out how to remove it without damaging the whole outer barrel. Which is the best method? Are there any videos on removing it? I am planning on putting on some sort of mock suppressor once I am able to remove it. I also would rather to not have to buy a whole new outer barrel to replace this one if I can't take it apart. Thanks!