||This review was for my UTG L96, I don't know if this will apply for other L96 models.
Great upgrade for the price. Easy install since you only need the cylinder.
I added a metal 1 piece hop up, a 650mm 6.03 inner barrel, and a new hop up nub and bucking and made this an actual sniper rifle capable of reaching 300ft+ and being able to hit a man sized target 8/10 times in the chest. With all those upgrades I was shooting between 540 - 550 fps (stock my rifle was shooting 460) with .2s. I used .3s or .36s in actual game play to get my results. When I installed this kit I could feel a noticeable difference in that the bolt was harder to pull back.
Great addition to any other upgrades
Does add fps and range (though not as much without all my previous upgrades)
Replaces the cheap plastic piston and spring guide
Will add more resistance to bolt pull back, hence more time in between shots. (To be expected though)
Rating: [5 of 5 Stars!]