Machined billet AR-15 uppers from Spike’s Tactical Posted November 24, 2009 in AR-15, Rifles by Steve Johnson with 10 CommentsTags: 2010, ar, ar-15, rifle, rifles, spikes Michael Bane reports that Spike’s Tactical will soon be selling machined billet AR-15 upper receivers. The new receiver (pre-anodized). Photo from AR-15.com Win a Kel-Tec PMR-30 !!!