Ring on top-back interferes with aim
Air-hose could impede thumb position
The product arrived in a package with all necessary components and instructions for installation, but you must have your own tools to install it (a few allen wrenches, some combination wrenches, and maybe a crescent wrench will do the trick). The instructions for install were easy to follow, but when it came time to actually place the stock into the gun, I had difficulty ressecuring the left half of the gun to the right half. Ultimately, I ended up using a vice to clamp it closed while I reinserted the screws. The install was troublesome, no doubt, but worth it to deliver a rock solid product with absolutely no wobble. When I finally picked the gun up, it was a relief to not have to use the air tank as a makeshift stock, and the gun was almost half the weight that it was (before the stock was installed). I noticed that the air hose connecting the power tube/valve assembly to the stock could impede thumb position for some, but I have pretty big hands and it wasn't a big adjustment for me. Also, there is an alternate mounting method that eliminates this problem, and allows the product to be used by left-handed players. When test firing in my back yard, I noticed that the ring at the very back top part of the stock interfered with aiming, but a quick fix to this problem is to simply crane your neck forward a bit farther.The flip-up support brace really does add a considerable amount of stability, resulting in more accurate shot placement.
The product is definitely worth the $90. You get what you pay for in paintball and this stock will not disappoint. It is among the best I have seen on the market in terms of durability, and it makes your weapon look pretty badass!