Product Description The Strike R.EX. Riser is a low-profile, lightweight optic riser engineered for AR platforms. Designed to achieve ideal co-witness when used with the Strike Industries Reflex Exoskeleton mount and A2-height or Sidewinder sights (without spacer), it provides a solid, versatile mounting base. The three-slot Picatinny rail section and universal Picatinny interface make it compatible with a wide range of red dots and optics beyond the R.EX. system. Precision machined aluminum with steel hardware and a durable Flat Dark Earth anodized finish deliver dependable performance in a compact footprint. Product Highlights Low-profile, three-slot Picatinny riser for AR-platform optics Co-witness capability with A2-height or SI Sidewinder sights Optimized for SI R.EX. mounts; universal Picatinny compatibility Lightweight aluminum construction with steel hardware Flat Dark Earth anodized finish for added durability and corrosion resistance Specs Product Type: Optic riser / Picatinny mount Compatibility: AR platforms; Picatinny rail systems Rail: 3-slot Picatinny Length: 2.09 in Weight: 2 oz Material: Aluminum with steel hardware Finish/Color: Flat Dark Earth (anodized) Includes: Riser base, clamp, spacer, riser rail; M5x30mm cap head hex screw; 4x M3x6mm button head hex screws; 2x 10x3x0.48mm springs UPC: 708747547832 Manufacturer Part Number: REXRISERFD Brand: Strike Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.