1.Full length top standard mil-spec 1913 picatinny rail.
2.Compatible with any M-LOK system for AR15 or .223 / 5.56 rifles.
3.There are two holes in the front, which can be used to install the sling swivel, so that your gun sling can be installed more convenient.
4.Slip fit locking mount design, easy and quick to use the wrench to instal.
5.Billet Anti Rotation Insert.
6.Anti Slip Design
7.Free Floating Design.
8.Comes with Steel barrel nut to ensure lifetime warranty