Please note for international customers (outside the US) the total you will see at checkout is for product and shipping ONLY. Any customs/duty/VAT/import fees will be due in your country and are not included in the total charged here. These fee's if any will be due to the carrier once your product clears customs. We do not have any control of this process or the amount. Please do not order if you do not understand this. This kit allows V1 stock owners to use the V2 non-adjustable rubber buttpad that comes stock on the new V2 base model systems. The kit includes a spacer that tapers the rear of the V1 stock up slightly to match the V2 pad dimensions without noticeable overhang and the need to drill indents into the wood to fit the V2 style alignment nubs. It uses the existing V1 upper screw hole into the stock, but a new screw hole needs to be made slightly below the existing lower screw hole to mount this pad.  This pad is fixed and not adjustable. For most users the stock fixed pad position will work just fine, but  this kit just allows you to upgrade the buttpad material from the original 3D printed pad to a real rubber recoil pad.