08-10-2012, 09:06 PM
I was also going to recommend the Corbon15 (now Bushmaster-owned) lower. They are pretty tough, and lighter than aluminum. You could also use the new FAB Defense stock with an internal recoil spring assembly to help mitigate that if you're concerned about it.
[video=youtube;PvcznfgvW3U]http://www.youtube.com/watch?v=PvcznfgvW3U[/video]
[video=youtube;PvcznfgvW3U]http://www.youtube.com/watch?v=PvcznfgvW3U[/video]
