Daniel Defense AR-15 Omega Rail 9 Mid-Length Two Piece Drop In Free Float M-LOK Aircraft Grade Aluminum Hard Coat Anodized Matte Black Features: The Omega Rail is the newest premium line of AR-15 drop in hand guards from Daniel Defense which were developed as two piece drop in style replacing your existing mil-spec polymer hand guards. The benefit of this rail system is that you have a true two piece free float system which you can easily install without having to press a gunsmith into service. Additionally it s worth mentioning that the hand guard is CNC machined from aircraft grade aluminum with a mil-spec hard coat anodized finish. Additionally should you decide to attach a sling to the rail the integral QD sling swivel mounts are rotation limited which the M-LOK modular attachment system provides you with a ton of modular attachment points. All of the Omega Rail fasteners are made to Military specifications so you never have to worry about the hand guard letting you down.. Daniel Defense AR-15 Omega Rail 9 Mid-Length Two Piece Drop In Free Float M-LOK Aircraft Grade Aluminum Hard Coat Anodized Matte Black Specifications: Daniel Defense 01-005-11047 Omega Rail 9 Free Float Hand Guard Two Piece Drop In M-LOK Modular Attachment System Integral QD Sling Swivel Mounts with Rotation Limiter Uninterrupted Upper Rail Platform Light Weight Ergonomic Rail System Overall Length 8.99 Overall Width 1.85 Overall Height 2.14 Inside Diameter 1.325 Overall Weight 8.2oz CNC Machined from Aircraft Grade Aluminum Type III Hard Coat Anodized Finish Matte Black Upper Hand Guard Lower Hand Guard Allen Wrench Fits: AR-15 s with Mid-Length Gas Systems