Rainier Industries PRO Series MK2 Quad-Rail AR-15 Handguard - Black

Rainier Industries Pro Series line of rails were designed for the hard use, professional end-user. To achieve this, we designed it an extended aluminum barrel nut and larger stainless steel mounting lugs for better rigidity to maintain a mechanical zero. The Pro Series Quad rail built to stand up to the rigors and demands of what your duty weapon requires. Pro Series Quad Rail Features: CNC machined 6000 series extruded Aluminum Hard Coat Anodized Milspec Type III, Class 2 Black Barrel Nut is 7075 Aluminum, steel wrench and mounting hardware included No Barrel nut shims required for installation 1.31" interior diameter, 2.2" x 1.97" outer dimensions Full length picatinny rails with laser engraved position marks at the 3, 6, 9 and 12 o'clock positions Compatible with most known low profile non-adjustable and adjustable gas blocks Made & Assembled in USA Weight: 9.55" - 16.1 oz 11.75" - 19.2 oz 12.55" - 20.2 oz