Vector Optics MOJ Red Dot Lower 1/3 Co-Witness Cantilever Picatinny Riser Mount (SCRA-71)
The Vector Optics MOJ Red Dot Lower 1/3 Co-Witness Cantilever Picatinny Riser Mount is a rugged, precision-machined riser designed for shooters who demand optimal sight height and fast target acquisition. Built with tactical performance in mind, it allows your red dot sight to co-witness with standard AR-style iron sights in the lower third of the optic’s viewing window, offering both comfort and flexibility in dynamic shooting situations.
Lower 1/3 Co-Witness Advantage
Featuring a 28mm (1.1") saddle height, the MOJ mount positions your optic perfectly for a natural shooting stance while retaining visibility of backup iron sights in the lower portion of the sight picture. This setup is widely preferred by professional and competitive shooters as it allows an unobstructed view of the target while keeping iron sights ready for immediate use.
Cantilever Design for Versatility
The cantilever structure extends the optic forward, improving eye relief and freeing rail space for magnifiers, night vision devices, or other accessories. This makes it an excellent choice for rifles with limited top rail length or for shooters who want maximum modularity in their weapon system.
Precision Engineering & Durability
Crafted from high-strength 6061-T6 aluminum alloy and finished with a black matte anodizing, the MOJ mount offers excellent resistance to recoil, scratches, and environmental wear. Its robust construction ensures stability under repeated firing with real firearm calibers while adding only 43g (1.5oz) to your setup.
Quick and Secure Mounting
Designed for universal compatibility, the mount fits all 21mm Picatinny/Weaver rails and locks securely with a simple side clamp system. Installation is quick and does not require specialized tools, making it ideal for field use where rapid optic changes may be necessary.
Technical Specifications
| Category |
Specification |
| Saddle Height |
28mm / 1.1" |
| Receiver Length |
45.5mm / 1.8" |
| Receiver Width |
27mm / 1.05" |
| Mount Length |
41mm / 1.6" |
| Weight |
43g / 1.5oz |
| Material |
6061-T6 Aluminum Alloy |
| Finish |
Black Matte Anodized |
| Mount Type |
21mm Picatinny / Weaver |
Key Features
- Lower 1/3 Co-Witness Height: Ideal for AR-platform rifles with iron sights.
- Cantilever Configuration: Extends optic for improved eye relief and accessory clearance.
- Lightweight Build: Weighs just 43g while maintaining solid stability.
- Premium Materials: CNC-machined 6061-T6 aluminum for strength and reliability.
- Universal Fit: Works with most red dot optics compatible with Picatinny/Weaver rails.
Practical Applications
This riser mount is perfect for tactical rifles, competition setups, and home defense builds where a fast, clear sight picture is critical. It is widely used by 3-gun competitors, law enforcement officers, and recreational shooters looking to optimize their optic placement without adding bulk or weight.
Included in the Package
- Vector Optics MOJ Lower 1/3 Co-Witness Cantilever Riser Mount
- Retail packaging
- Installation hardware
Summary
The Vector Optics MOJ Red Dot Lower 1/3 Co-Witness Cantilever Picatinny Riser Mount delivers a professional-grade solution for raising your optic to the perfect height while maintaining backup sight readiness. Lightweight, durable, and precision-engineered, it’s an essential upgrade for any shooter seeking improved ergonomics, faster target acquisition, and enhanced flexibility in their shooting platform.
