The MOE SL-S Stock is the latest stock in Magpul’s MOE-SL line. It retains the narrow design of the rest of MOE-SL line but adds a more triangular cross-section for an improved check weld and battery storage. You can check it out at Magpul.com.
The video that Magpul produced for this stock is excellent. I mean, they are always excellent, but this one is a step above. It dives into the design and history of the triangular cross-section stocks before sharing the features of their new MOE SL-S. It is well worth just over a minute of your time.