Ruger 10/22 to a FN PS90/P90 Conversion kit *** Does not include the Ruger 10/22 or the Mag.*** There is only one manufactured bullpup design on the market for the 10/22 and I was'nt impressed with it. Saw this home conversion on the web, so I built one. Liked it so much I built two. Very reliable and fun to plink with. Trigger is accomplished with a metal rod between the triggers. Including an aluminum light with this. You will need an extended mag release and a banana clip. Remove top half, drop in existing 10/22 barrel and breach assembly, reinstall top and put the red dot back on. That's it. Very reliable and fun to plink with. Will not part with the original project. Try it and you'll see why. Returns accepted but must be returned in original condition within 7 days.