I had my back fused and was bored as he!!. So my lovely wife for Christmas bought me a S&W stripped lower to tinker with while I wasn't working for 2 months. I used RRA lpk, and magpul ctr mil spec collapsible stock. I also got a stripped YHM upper. Need to get some more $$$ to keep going but here are some pics. Cant decide the best part, the fact that I learned how to put it together on YouTube, or that I only shot 1 detent into orbit! Let me know what you think. I've been really impressed with YHM products and am going with their barrel and diamond hand guard. Good plan? Let me know, I've never even shot an AR before. I'm thinking of going with a spokes bcg. My camera is giving me troubles, I will post more later. I'm open to any suggestion. I've had a lot of fun learning this M4 and am excited to shoot it!