A645Z Picatinnt Side Mount Adaptor 45 degree Zombie Green Machined aluminum with 5 durable finishes - Anodized in matte Black, Red, Blue and Cerakoted in Dark Earth and OD Green. Designed to co-witness with the side rails of the R.A.M.P. Mount to allow the use of pop-up or fixed type combat/open sights. 45 offset offers a mounting position for flashlights, lasers, slings or open sights without obstructing your sight line. Four Mil-Spec 1913 cross slots to accommodate most Picatinny style accessories. The A645 Side Mount is designed for Flat Top MSRs and other tactical style firearms. It provides a 45 accessory platform that attaches to a Picatinny style rail. The A645 Mount can also be mounted to the rail on the hand guard to allow your back-up sight to co-witness with the sight on your R.A.M.P. Mount. This is a simple installation and requires no modification to your firearm. NEW for 2015 To add to its already sleek design, the A645 Side Mount has been redesigned to incorporate two cut out sections to achieve an ultra-lightweight feel. The side rails have also been updated with one more additional cross slot to increase the mounting capabilities to 4 slots total.