R2DA Wiki
R2DA Wiki

This item/feature has been removed.
There's no way to view this in-game and it's never going to be added back in again.
Information is definitely out-dated, and you shouldn't really take it to heart.

"I can see my base from here!"
―Scout (TF2)


The XS1 Scope was an optical attachment for the Railgun.

It added a scope which you could use to zoom in to see zombies.

Background Story

As part of the Railgun package, K177 included the XS1 Scope with every gun given out. This particular scope was designed specifically for use in conjunction with the Railgun. No other gun can properly be used with this scope.

Unfortunately, the people chosen to wield the Railgun quickly grew arrogant with its use. Scientists forcibly and quickly modified theRailgun to be a fraction of its former glory. When that wasn't enough, the Railgun was taken away entirely. The XS1 Scope had no other choice but to leave with the only gun it was made for.


  • Buy a suitable Custom Sightmark that you feel comfortable with.
    • If you don't have a sightmark, when you zoom in, there will be no visual guide to help you aim.


  • This attachment was removed alongside with the Railgun when the FATAL5 was released.
    • As such, this attachment can be considered the rough equivalent to the Built-In Scope.
    • Both scopes are moderator exclusive items and the FATAL5 has a virtual, sci-fi scope built in.
  • This was one of the few Attachments to support Custom Sightmarks.