Noveske 13.5" NSR M-Lok Rail System - Anodized Black

--Hard Coat Anodized Aluminum 
--Ultra Light and Robust Design 
--1913 Continuous Top Rail 
--M-LOK Direct Attachment System 
--Steel Barrel Nut 

Includes: 
--Handguard 
--Barrel Nut 
--Mounting Screws 
--T25 Wrench 
--Instructions 

INSIDE DIAMETER: 1.35"