Back up Iron Folding Battle Sights 2 Piece Front and Rear Tactical Flip Up Picatinny. Shipped with USPS First Class.The best sights for the money. Have built over 50 rifles and used a variety of sights including trusted polymer and iron sights costing over 200 for the pair. These sights look and function as good and as well as any sight I’ve owned. Each rear sight has been modified to make it many times better than the original. Each pair is totally disassembled and pins are replaced and secured.  2nd picture shows just one modification that is done on each sight. Spring tension is modified and screws have been thread locked with medium strength Threadlocker to ensure they won’t back out or come loose during use. The rear sight has large and small aperture that can be flipped back and forth. This has been been modified to snap into place and hold its position. There is now a definite positive retention in the sight aperture. This added feature makes this my favorite sight. Includes front and rear sight. Made of solid steel and aluminum. Low profile while laid flat. Sights just lift into position and lock into place will minimal movement or wobble in the upright position. Each sight unlocks and is able to lay flat by depressing button on the side. The rear aperture is adjustable left and right. Front sight is adjustable up and down.REAR SIGHTMaterial: AluminumWeight: 1.59 ozPieces: 1Rail Type: Picatinny/WeaverLength: 1.15” inch folded 2.13” flatWidth: 1.37” inchHeight: 1.75” inch folded 1.48” inch above rail0.75” inch flat 0.55” inch above railFRONT SIGHTMaterial: Steel/AluminumWeight: 1.3 ozPieces: 1Rail Type: Picatinny/WeaverLength: 1.15” inch folded 1.97” inch flatWidth: 1.37” inchHeight: 1.59” inch folded 1.32” inch above rail0.78” inch flat 0.50” inch above rail