Alright, so I got this as I kept seeing the Kriss Vector Kit used by a lot of people and I know this goes along with that kit. It looks perfect like you would expect from all the images. If you want to get Picatinny Rails for the side pieces you will need to get the 5cm size from the posting here on OutofDarts for the Stryfe Picatinny Rail set as it will have the proper two screw holes that line up with the side panels. https://outofdarts.com/products/worker-picatiny-rail-22cm-for-nerf-stryfe?variant=14753312833578
As for the Top Rail Picatinny if you want to do some dremeling that you can use the 27.9cm rail sold in the other picatinny rail set OutofDarts sells. Judging from the length if you did not want to do any dremeling then getting a 22cm and a 3cm rail should fit on top of your Stryfe with the back end of your original nerf rail exposed. That is what I will be trying next.