The first item will not fit : it is designed for VS2 and VS3 (The vs1 is not a "regular" VS series).
I don't know for the second item. However there's no need to spend on that part. If you want to get a nice updgrade for the VS1, be sure to :
1: have a great mask
2: have a fast hopper.
Thoses things are the most important, do not spend more in parts that the marker cost to you. If you already have thoses things and want a upgrade, get yourself a feedneck and a new barrel.
that is where you are wrong senior cooper Trinity Spyder Front Block w/LPC and Gauge will work and also the Custom Products Gas Thru Paintball Foregrip... hahahaha