USM4 | Mil Spec Lower Receivers
Nov 15, 2013 #1 D dean2182 Plinker Rating - 0% 0 0 0 Jul 14, 2009 73 6 New Albany USM4 | Mil Spec Lower Receivers
Nov 15, 2013 #2 Lunati Sharpshooter Rating - 100% 2 0 0 Dec 28, 2012 615 63 Warsaw Never heard of them, looks decent. Pretty pricey though for a complete lower with a crappy stock.