Pika, once again you have misunderstood.... In the title of this post is the word "InstaInfected", now what does that mean to you..
Originally Posted by pikaluva13
Just remove railgun from it overall.
Weapons > Starting Weapons > (Remove Railgun)
If you also "Disable Spawning" and "Disable Ammo Spawning" it should fix your issue. (Unless I'm not understanding what you want)