Specifications:

--Material: Aluminum alloy M-Lok Rail Mount Adapter
--Color: Black
--1 Set/Pack Of 13-Slot Solid Rails, 8 Screws, 8 T-Nuts (with the extra 2 sets of screws and T nuts, you don't worry about the loss of screws) and 1 Allen Wrench.
--Size: for 21mm Standard Rail
--Weight: 135g/Set approx
--Rail Type: M-Lok System

Features:

1 Compatible with M-Lok System Rail
2 Designed for Use with Mlock Hand Guards, with Black anodized finish materials
3 Ideal for Attaching Kinds of Tactical Accessories,Such As Sling Mount, Iron Sight, Red Green Dot Sights, Micro Dot, Scopes, Optics, Grips, Bipods, Flashlights, Lasers or Other Tactical Accessories;
4.Include a Allen Wrench ,Easy to install
5.Lightweight&Solid Picatinny Rail Set
6.Removable locking pin for safer installation

Package includes:


1* 13 Slot Rail
1* Allen Wrench
4* Screws