Here is the first part of a review for the clipped and pinned SUO lower housings from Shockwave.
The lower is made for all HK weapons and clones, and is German-made for a Malaysian contract. I really like it. The trigger pack from my C93 dropped right into the SUO lower. The SUO lower looks a lot better than the Navy style housing that came with the rifle.
The next step is to take it out to the range.