Brain Fart Help

[Hickoryhead]

Hey guys! I got into an argument at the LHS today about a fail safe. I am converting an Ofna buggy. I was throwing the fail safe out with all the nitro stuff. One of the local idiots escaped for the village down the road and started bugging me about my set up. One thing lead to another and the argument was on. After 5 minutes of a couple of us arguing with him I left the store after he was thrown out of the store. Any ways my question is I don't need the fail safe from the nitro stuff right? The MM has it built into it if I am correct. The reason I ask is after arguing about it the idiot made me second guess my thinking. He was claiming the fail safe is built into the radio receiver. If thats the case then there is no need of one on a nitro. All RC's have a radio reciever. But I keep second guessing. Am I right?