I've been using The Lock Stock in Onward and though I really like it, it needed some improvement.
The forward rail consists of 3 separate pieces. I noticed some play at each seam so I added brackets on each side. It wasn't much movement, but the extra brackets help keep it even tighter.
The joints are held together with a single 10-32 knob. There is a plastic ridged washer that helps keep it locked in place when tightened. The knobs have a tendency to loosen up over time. I got tired of having to re-tighten them every so often and added some brackets on those joints. Once I got the joints set into the position I liked I never change them anyways so this was easy decision to make. I even removed the knobs and replaced them with 1" 10-32 screws.
Finally I added an adjustable cheek riser to the stock. The lower 2 mounting holes fit perfectly at the bottom of the stock. As you can see, this is where I put those knobs to good use. The screws I used for the knobs are 10-32 0.5" with a hex head. The cheek riser was a bit too long so I used a dremel and trimmed the end down to the first notch.
After I was finished I used some black cloth Gaffer's Tape to cover up the brackets.