Quad Rail 10" w/barrel nut

CNC precision machined solid 6061-T6 aluminum with a hard anodized matte black finish, these quality rails give you lots of accessory options. Each has two QD sling swivel ports and with an inner diameter of 1.835", they can accommodate almost any low-profile gas block on the market. Includes barrel nut and necessary hardware Features: 10" Mid-Length Solid 6061-T6 Aluminum Picatinny / Weaver 23 Top Rail Slots Weight: 16.9 oz