This is a great upgrade for heavily modified VSR Sniper Rifles.  If you are looking to get the most out of your VSR, then this set can help you do just that.  There is some trial and error tesing involved, but this set can help you get your VSR "dialed-in" just the way you want it.

 

Set includes 5 custom air nozzles and a new cylinder head.  This set is referred to as an Air Seal Dumper Kit.