Excellent product. Perfect instructions. The installation has been well thought out.
Won't work with certain after market boards such as Virtue.
If you would like to take your spyder and modify it to fire like a high end gun, then you need this switch. I bought it along with the NV trigger kit from the same supplier. The trigger is excellently CNC machined and works perfect with the switch. Your fingers are the only thing keeping you from pulling the maximum BPS that your board will allow.
All-in-all this is one of the best products I have ever seen available as an upgrade... and I've seen a lot.
Don't hesitate to buy this if your looking for a sweeeeeeeeeeet upgrade to your spyder...