I have been searching around for a billet lower for a 300SAUM build I'm working up I am needing a DPMS compatible lower. Has anyone had any experience with this company or this lower http://www.tacticalmachining.com/store/products.php?pid=114 The competitors MaTen product looks great but they only sell sets. I really don't intend on spending a ton of money on this lower Id like to throw a great trigger in it though.