The lightweight, streamlined design of the Daniel Defense A1.5 AR Fixed Rear Sight 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. The fixed rear sight is of the correct height for proper alignment with an A2 Rifle or M4 “F” Marked Front Sight Base, as well as for co-witnessing with a red dot optic. The sight’s feather-light 1.7 ounce weight goes virtually unnoticed when attached to a rifle’s top rail. The A1.5 is a hybrid rear sight that incorporates the A2 Flip-Type Sighting Aperture (large and small aperture sizes) with an A1-Type Windage Wheel that requires a bullet tip or similar tool for adjustment, thereby ensuring that sighting corrections made at the range are not inadvertently altered by rough handling or use in the field.
