The kit includes the RAS, mock mock silencer, and a basic wrench (spring wire type) for the delta ring. I installed the kit on a KWA m16 br. The installation went smooth, and the final result was impressive.
Even though the RAS is free floating, I took a few extra steps to insure a 100% wobble free installation. I recommend screwing the barrel nut and Ras as far as it will reasonably go. I also cut out a round piece of black thick(1/2 in) rubber(same as the ras inner diameter) with a hole through the center (same as the kwa outer barrels O.D.). I then slid the make-shift 'donut' over the barrel and into the end of the RAS, completely out of sight (between the two end ras vents).
The end result is very solid without the rubber, but with the 'donut', I bet the barrel is so tight it could be used as a baseball bat! -not recommended, it may demoralize the wobbly barrels around you.
-lighter than expected
-very strong, solid on kwa-m16
-airsoft gi shipped it in perfect condition/fast.
-comes with a simple wire wrench(may need strap wrench to get barrel nut tight/aligned)
-locktight + cheap strap wrench + 'donut' = perfect installation on kwa m16.
-very long, but not an issue for a DMR setup
-creates a tinny-hollow 'whooomph' noise (easily fixed by inserting a 1/2 abs pipe (sprinkler pipe) inside the length of the mock silencer, and surrounding with insulation/pillow fill etc)
-ICS rifles have some difficulties during install.