DLP Tactical Minimus Metal Folding Front & Rear BUIS Iron Sight Set The LOWEST PROFILE Folding Sight Set on the market, mounts to any standard Picatinny Rail Constructed of Forged T-6061 Aluminum Alloy, can be installed directly on gas blocks and will not melt like Polymer Folding sights Elevation Adjustable Front Sight is designed with slight rearward cant so it will fold flat if dropped instead of breaking Windage Adjustable Rear sight has 0-300m close combat peep ring Rear sight features 4 slot Picatinny rail on top so you dont sacrifice any rail surface (and is perfect for mounting a Micro Red Dot Sight)