Luth a2 rear sight aperture - Luth-AR A2 Rear Sight Aperture

If you're not a big fan of the A1 rear sight aperture and you're looking to swap it out with a standard A2,this is it. The finish is correct also. Mine doesn't sit down flush in the receiver aperture pocket because the A2 sight is slightly taller on the side with the larger peep sight hole. But it's not enough to cause a problem when looking through the smaller long range hole. I may file down a small amount of the loop on the larger hole so it will fit down in the recess thats machined out of the rear sight area so it will sit flat. But it's a direct replacement for the A1 sight aperture thats in the A1 carry handle upper receivers. If you decide to file or grind on the aperture, just get a paint pin to cover the bare metal.