I just found an awesome deal on 2 sights for $20. the viper only comes with 1 pin and the truglo has 2. My question is, are the pins interchangeable with eachother or do I need viper specific pins? The only reason I ask is because my pro shop doesn't carry viper replacements and if I order some from the viper website it will cost $30+ and take almost 3 week to get here (which is slower than all hell). The viper is the predator hunter 100 series (I think) the truglo might be the carbon xs?
