Will give props on the fact that it's metal components but the green dots barely glow and don't stay glowing for long and the screw for the rear sight, which also holds the blowback housing tight to the slide is shorter than the og screw and the threads are very short and soft and by the time I actually got my blowbackhousing back tight to my slide the screw stripped and I had to make due with the factory wide bite screw getting stuffed in the fine thread steel hole