Daniel Defense M4A1 RIS II FSP Rail 12.25

Daniel Defense RIS II FSP Features This rail system allows users to retain their standard A2 front sight gas block while taking full advantage of free-floating barrel performance. The RIS II FSP features full-length MIL-STD-1913 Picatinny rails at the 12 3 6 and 9 o'clock positions offering secure and repeatable mounting for lights lasers foregrips and optics. Constructed from aircraft-grade aluminum and paired with a hardened steel barrel nut the M4A1 RIS II FSP ensures exceptional du