I installed a bayonet lug & pin on this so I could mount the Extrema Ratio Fulcrum Bayonet & Combat Knife onto the P556. I also installed a PE57 style flash hider on the front.
Would love to hear your opinions. Let us know what you think! We're thinking of making this our P556 CGS Custom. I would love to know what other items you'd like to see attached to it.