I'm not sure why the pics didn't come through. I posted them from my phone and I can see them when I look at this thread on it, but not from my desktop....Fuck, anyway, These LWRC handgaurds are full length 1913 rails at 9,12,3, and 6 o'clock. It has 2 small tabs protruding at the lower part at the rear. The main portion of the upper half of the rail detaches when you loosen two screws at the front of the handgaurd, and the handgaurd appears to have a clamp at the rear, but I'm apparently not cerebral enough to determine to what they are supposed to clamp to. Again, any help from someone who is running these, or has installed them would be appreciated.