grndZr0

I borrowed a buddies sealed piston after the last 3 gun when my slp fell flat on its face... I have the "Universal" piston. Worked great for about 500 rounds, then stopped working. Works flawlessly with the sealed piston. Are there any issues with "overgassing" or extra recoil in the system with the sealed piston? Why didnt FN make it that way to begin with? Ryan

Thanks for the replies guys. Loving teh shotgun, its a blast!!! (literally)

Is there any way you can get the shorter barrel from the regular SLP and put it on the MK1? I would like to be able to set it up for home defense, and then swap it over to a longer length for 3 gun. Ryan