Thinking about building an AR pistol with one of my lowers from the April group buy. I have done some searching and it seems to be legal since it is a "virgin" receiver. Please correct me if i am wrong. Has anyone heard of Young Manufacturing or used any of their products? I came across their website and found what looks to be a decent deal on a complete pistol upper. Here is the link
http://www.youngmanufacturing.net/product-info.php?pid134.html
http://www.youngmanufacturing.net/product-info.php?pid134.html