R603FS or R603FF Receivers FASST System 3PM 4PK, 4PKS, 4PKSR Futaba

Price is for (1) receiver. Your choice of the FS or FF. I have a total of 4.
Receivers work as they should in very good cosmetic condition.
If you have a preference on FS or FF when you purchase, please let me know in the comments or I will just pick 1.
If you would like to purchase more than 1, I will take $5 off for each one purchased.