Firstly, the JCS stock has a buttplate that sticks out from the stock body. This may seem like nothing, but when you try to quickly bring the gun to firing position you often discover that the buttplate gets snagged on your clothing, fouling your aim. The second problem is that these stocks, at least when I purchased them, did not come with a rubber shoulder pad. This, combined with the plate's narrow width, created a stock that tends to dig into your shoulder. Lastly, there was the reason I bought a folding stock in the first place: to let me still use the marker for speedball. I discovered the marker was too clumsy to use effectively with the stock collapsed, so I simply started playing speedball with the stock out, with amazing success. Woodsball guns actually do work well for speedball. My recent purchase of a lightweight 68 Carbine for run and gun type play sealed the deal.
For the upgrade, I chose the standard Commando stock, without the air-through capabilities. This was due to couple of reasons. First, I did not believe it justified the expense, due to the 98 Custom's ASA being far to the rear of the gun and low, which means any length benefits of air-through would be limited to 2 or 3 inches. Second, I figured I could always purchase the macroline and fittings, and perform the upgrade myself should I decide to invest in it. This actually turned out to be a very smart move, which I will explain momentarily.
At first comparison, there does not seem to be that significant a difference between the two stocks. The SpecOps stock is a bit more solid-looking, but the overall weight is about the same. When you actually press them to your shoulder, however, the SpecOps stock gives a solid, comfortable pressure, whereas the JCS digs in uncomfortably, especially if you move it from side to side.
Upon mounting it on my 98 Custom, I discovered something a bit disturbing. I use a Rocket Cock II on my marker, and cocking knob for the Rocket Cock II is directly in front of the front tube hole for the air through stock. This means that you will be unable to use your Rocket Cock II if you are using air through stock on a 98. I also discovered the optional bracing bracket, used to attach the stock to the right receiver half, does not work due to longer screw lengths needed for the Rocket Cock II (ordering an extra front foregrip screw should fix it). The bracket also does not fit without modification if you have response trigger installed (modification is a 1 minute Dremel job). Fortunately, you can play musical screws with it. Place the front grip screw in the stock and it will work, and put the original screw in the front grip and tape it in. The substitute front screw is long enough to hold it firmly until you obtain a replacement.
Once the stock is installed, the marker seems to balance a bit better than it did with the JCS. I am not certain if it is due to true balancing, or simple improved comfort. All I can tell you for certain at this point is that the marker just feels better. I tested bringing to aim several times, and I no longer have the issue with the stock getting snagged on my shirt. Snapping the marker to firing position also is a much smoother action, with far less wobble and twisting. The rubber buttplate grips your shoulder very well and prevents unintended movement.
Overall, it seems like a very worthwhile upgrade. The 98C version of the Commando stock is very competitive pricewise when compared to other stocks, but it is certainly the best I've felt so far. If you are looking for a good stock for your gun, check this out. You do not want the air-through version if you have a Rocket Cock II, and like any stock, you should expect to need a sight rail, but I must conclude SpecOps knows what they're talking about. Excellent product.
This post has been edited by PhoenixWolf: 16 December 2005 - 04:46 PM