SINNER 15 (RM-15)
7.62 NATO (disc. 2017), 5.56 NATO, .300 AAC Blackout, or 6.5 Grendel cal., 16 or 20 (new 2018) in. stainless barrel, recessed mag. release, winter trigger guard, billet cut upper and lower receiver, Serpent Series (disc. 2017) or O.A.F. Ser...