Fortis Manufacturing F1TM Optics Mount - Lower 1/3 Black. Fortis Manufacturing crafted these Red Dot Sight Mounts from Type III hard coat anodized aluminum for a lightweight durable and corrosion-resistant structure. Each OpticsPlanet Exclusive Fortis Manufacturing F1TM Red Dot Sight Mount - Lower 1/3 mounts to any Mil-Spec 1913 Picatinny rail and the innovative design extends your sight forward allowing for quicker target acquisition in the field or at the range. Upgrade your weapon build by attaching an optic with this OpticsPlanet Exclusive Fortis Manufacturing F1TM Optics Mount - Lower Third. Specifications for OpticsPlanet Exclusive Fortis Manufacturing F1TM Optics Mount - Lower 1/3: Manufacturer: Fortis Manufacturing Color: Black Finish: Anodized Fabric/Material: Aircraft Grade 6061-T6 Aluminum Red Dot Sights-Footprint: Not Applicable Attachment Type: Picatinny Optic Cut: Not Applicable Weight: 1.3 oz Condition: New Features of OpticsPlanet Exclusive Fortis Manufacturing F1 Optics Mount - Absolute Co-Witness: Available exclusively from OpticsPlanet One Piece Billet Design Slotted Screws Attachment Aircraft Grade 6061-T6 Aluminum Military Specification Type III Hard Coat Anodized Logo on both sides Lightweight 1.3oz Absolute Co-Witness Aimpoint Micro T-2 H-2 T-1 H-1 & Aimpoint CompM5 Vortex Crossfire & Sparc II Sig ROMEO4 (H/S/T) & ROMEO5 Primary Arms Micro Holosun Micro Blue threadlock Will work in conjunction with 3x magnifiers OpticsPlanet Exclusives Package Contents: OpticsPlanet Exclusive Fortis Manufacturing F1TM Optics Mount - Lower 1/3 blue threadlock Fortis F1 Optics Mount is designed to work in conjunction with Aimpoint's popular Micro H-1 or T-1 optics. The F1 Optics Mount is designed to attach to your flat top upper receiver. Its lightweight low-profile is one of the lightest designs 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 back up iron sights for a larger field of view. Will work in conjunction with 3x magnifiers. Features/Specifications: One Piece Billet DesignSlotted Screws AttachmentAircraft Grade 6061-T6 AluminumMilitary Specification Type III Hard Coat AnodizedLogo on both sidesLight weight 1.3ozLower 1/3 witnessmade in specialized factories Included Accessories: blue threadlock