Dude is this a troll? Calm down. Put in your time. You've only done 23 raids total. I just got mine last week after completing like 150 raids and endless nightfalls. At least earn the right to bitch about it.
I can almost guarantee i have less time then most of u only been playing a month and i have every exotic other then no land beyond its pure luck just grind every day good things come to those who work hard
I had a meeting with Xur this morning. He told me the Gjallarhorns are on backorder due to high demand. Try again next week.
By the way, he said there has been a price increase. Expect them to cost 100 Strange Coins each.
This is the same complaint week after week. It's just easier to play the game and get it to drop that way. There are plenty of other weapons sold by xur that are just as rare. Personally I am happy that he's selling truth since it's the last exotic heavy weapon I need.
Also I want to add that yes the gjallahorn is a really nice and fun rocket launcher but it is not entirely necessary to the game. You don't even need it for Crota, you just need a rocket launcher - tracking helps of course.