Arisaka Defense OOM-BASE Offset Optic Mount Base 35/45° Picatinny Hardcoat

Product Description

The patented Arisaka Offset Optic Mount Base is a modular, low-profile solution for adding a red dot at a 35° or 45° offset on your rifle. Designed for the top Picatinny rail, the mount’s unique geometry keeps the optic vertically aligned over the bore and maintains a consistent height whether set to 35° or 45°.

The base is fully ambidextrous—reverse the base and plate during assembly—and pairs with interchangeable optic plates in two heights for a seamless cheek weld and fast transitions.

Product Highlights

• Selectable 35° or 45° offset by reversing the stem between base and plate
• Ambidextrous configuration; base and plates can be reversed for left- or right-side use
• Two plate height options to match primary optic heights: standard (1.5–1.8 in) or tall (1.9–2.2 in)
• Precision 6061-T6 aluminum with MIL-A-8625 Type III hard coat anodized finish
• Made in the USA with robust hardware for secure, repeatable mounting

Specs

• Product Type: Offset Optic Mount Base
• Offset Positions: 35° or 45°
• Mount Interface: Picatinny rail
• Base Length: 1.0 in (occupies three Picatinny slots)
• Base Height Above Rail: 0.180 in
• Weight: 1.9 oz with standard plate; 2.2 oz with tall plate
• Finish: MIL-A-8625 Type III hard coat anodized (black)
• Included Hardware: One 10-32 x 1.5 in Torx socket cap screw; two M4 x 16 mm screws; each separate plate includes two M4 x 10 mm screws
• Plate Heights: Standard (1.5–1.8 in) and Tall (1.9–2.2 in)
• Supported Plates/Footprints (plates sold separately): Docter/EOTECH/Insight/Meopta/Vortex Venom; Trijicon RMR & SRO/Holosun 507C; C-More; Leupold DeltaPoint; Aimpoint Micro T1/T2; Aimpoint Acro
• Country of Manufacture: USA
• Color: Black

UPC: 601557939623
MPN: OOM-BASE