You my friend might be onto something. All I ever seem to get from RNG is Suros, hardlight and Truth. Was finally able to get an ice breaker when Xur sold it a few weeks ago. Meanwhile a buddy of mine gets all the guns that don't drop for me (ice breaker and gjallarhorn). This dude has 1 of each on all 3 characters. Still grinding and hoping for the day that G-horn drops.