Machined from 6061-T6 Aluminum and Military Specification Hard Anodized, our Fixed Front/Rear Sight combo is both lightweight and durable and is the perfect complement to each other.Rail-Mount Fixed Front Sight DescriptionThe lightweight, streamlined design makes it unobtrusive and snag-free. The one piece design makes it easy to install on any MIL-STD-1913 rail and it secures with a slotted fastener threaded into a self-locking stainless steel thread insert. Special attention was paid to facilitate the use of compact weapon lights forward of the sight, such as the X300, TLR-1, etc. The concave radius on either side of the sight is a great place to rest your thumb for easy, ambidextrous activation of the light.FeaturesOne Piece Streamline DesignUses Standard AR15 AperturesEasy to use in conjunction with compact, pistol-type weapon lightsSlotted Screws AttachmentLight weightA1.5 Fixed Rear Sight DescriptionThe lightweight, streamlined design makes it the optimum back up iron sight for shooters using today's most popular reflex optics. Its well thought out design does not impede the use of the charging handle on M4 type rifles. The one piece design makes it easy to install to any Military Specification flattop upper receiver and the sight is secured to the upper using a slotted fastener which is threaded into a self locking steel thread insert.Fixed Sight Combo Materials & ConstructionPrecision CNC machined from Aircraft Grade 6061-T6 Aluminum and Military Specification Type III Hard Coat Anodized for a rock hard lasting finish. The Rail-Mount Fixed Front & Rear Sight combo weighs only 2.8 Ounces.Aircraft Grade 6061-T6 AluminumMilitary Specification Type III Hard Coat Anodized2.8 Ounces!Made in the USA!Warranty StatementThe Daniel Defense Fixed Sight Combo carries a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense Fixed Sight Combo shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your sight combo in the most expeditious and inexpensive manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products. Be sure to retain your sales slip as proof of purchase date when making a claim.