RF 5.56 M4
5.56 NATO cal., GIO, stainless carbine length gas system, 16 in. M4 Melonite barrel, A2 flash hider, M4 collapsible (disc.) or MFT Minimalist stock, Ergo SureGrip (disc.), A2 (disc.), or MFT grip, low profile micro gas block, forged upper a...