Has anyone seen/fired/owned a Cavalry Arms Cav-15 lower? It's a solid piece of glass filled nylon 6 polymer assembled from two halves using a linear vibration welding process and includes the butt, grip, and trigger guard. It uses all standard mil-spec parts with the exception of the take down pins. I've been thinking about getting one for my first AR-15 build, while i still can. Please let me know your thoughts. Polymer lower... hell I just had a total mental lapse. Will a Mod please delete this and save me some embarrasment before anyone sees it? I may as well just throw out my manhood and buy a Glock.