Yeah, there's actually 3 guns that you can farm for better rolls this Halloween event:
Green Jurassic - Pulse Rifle
Braytech Werewolf - Auto Rifle
Horror Story - Auto Rifle
Looks like my best drop so far is Rangefinder and Unrelenting on the Green Jurassic but its not as good as other things in the crucible curently.
Also, the Dino gear can be bought for 6000 Bright Dust instead of Silver (real money) so I went ahead and got the Titan set. Its pretty decent, although I think the focused on the helmet more than everything else. The clawfeet do stand out though when I run about i've noticed! I made mine with Neon Pop Shader which I think makes him stand out more 😄
Make sure you also check the Bright Dust store section every reset. The Sparrow from Halloween is amazing - essentially a moving Spider when you drive around on it! - but you don't have to buy for silver as it goes on sale October 19th to October 26th you’ll be able to pick it up, again from the Eververse store, but for 2500 bright dust instead! I think MoreConsole enjoyed even more so but ngl, i'm with him!! (Video is only a minute long).