Fortis F1 Optics Mount - Lower Third 1/3 Co-Witness

Fortis F1 Optics Mount - Lower Third 1/3 Co-Witness Fortis F1 Optics Mount is designed to work in conjunction with Aimpoint's popular Micro H1/H2, T1/T12, as well as the Vortex Sparc II series optics. The F1 Optics Mount is designed to attach to your flat top upper receiver. Its lightweight, low-profile design is one of the lightest out there at 1.3oz. The Fortis F1 Optics Mount features an innovative design by extending the optic forward for faster target acquisition. It secures to any MIL-STD-1913 Picatinny Rail with two slotted machine screws. Offering a lower 1/3 rd to your backup iron sights for a larger field of view. **Will work in conjunction with 3x magnifiers. Features One Piece Billet Design Slotted Screws Attachment Aircraft Grade 6061-T6 Aluminum Military Specification Type III Hard Coat Anodized Logo on both sides Lightweight 1.3 oz Lower 1/3 witness Made in the USA!