The Hannibal Rail allows shooters to directly-mount a micro red dot forward of the action without the need for a Picatinny rail clamp adapter. It mounts directly to the barrel, allowing the use of most aftermarket Mini-14® stocks including the A-TM Folding Stock (13006) and supports the mounting of micro red dot sights. The integrated Picatinny rail on top of the Hannibal Rail is perfect for mounting any accessory and gives the rifle a more tactical look. The included 2" Picatinny rail and QD swivel mount can be attached to the side of the Hannibal Rail for even more accessory mounting options. The Hannibal Rail accepts red dot optics compatible with the following footprints: Trijicon RMR®, Leupold DeltaPoint® Pro, Vortex VENOM® and C-MORE. NOTE: use this mount if your rifle is 2008 and later and has a factory flange barrel and a series number beginning with 580 and higher. Refer to the Serial Number Lookup Page on Ruger.com if you are unsure what year your rifle was manufactured: https://www.ruger.com/data Process/serialHistory/. This kit includes a Hannibal rail, barrel clamp, 2” Picatinny rail section, QD swivel mount, blue thread locker and associated hardware. Fits Mini-14 and Mini Thirty rifles. The mounts is made from 6061-T6 Aluminum with an anodized finish. It is 9.9” L x 1.5” W x 0.7” H and weighs 5.6 oz. Made in the USA by Samson Manufacturing.