Which hi vis sight did you use? What is the slingshot mod? New to handguns, have a SR22 and a Lite. On my first mag of the day I'm having trouble getting the gun to fire and I have been sling-shooting it if that is what I think it is, pulling back on the bolt and letting it go forward. I guess it is not cocking the gun, do you have to use the bolt stop to load and fire the first round of the first mag? It always works for the rest of the mags using the bolt stop. Thanks Steve