This is an AR-15 quad rail for the 6.5" carbine length. This rail in made out of anodized aluminum and is marked on all 4 sides. You will need a delta ring (not included) for this to be installed.
This is an AR-15 quad rail for the 6.5" carbine length. This rail in made out of anodized aluminum and is marked on all 4 sides. You will need a delta ring (not included) for this to be installed.