First Impressions of AT3 Tactical RCO Riser Mount for MRO Pattern Optics
The Trijicon MRO is a fantastic optic, but its factory mounting options don’t always provide the ideal height for AR-15 platforms. The AT3 Tactical RCO Riser Mount for MRO Pattern Optics promises a simple, affordable solution to achieve either absolute or lower 1/3 cowitness. This complete kit, including a cantilever riser, height spacer, screws, and wrench, immediately piqued my interest, as I’ve always appreciated AT3 Tactical’s reputation for delivering quality without breaking the bank.
I needed to find a reliable mount solution to co-witness my MRO on my AR-15. The factory mount was too low, making it difficult to quickly acquire targets, particularly while wearing night vision. Upon unboxing, I was pleased with the AT3 Tactical RCO Riser Mount for MRO Pattern Optics’ clean, anodized finish and lightweight design. The included components felt well-machined, and the instructions were clear and concise.
I considered other options, such as the Scalarworks MRO mount and the Midwest Industries QD mount. The Scalarworks mount is incredibly lightweight and boasts a fantastic QD system, but it’s significantly more expensive. The Midwest Industries mount is also a solid option, but I preferred the cantilever design of the AT3 Tactical, which I suspected would offer better eye relief adjustment. My first impression was one of cautious optimism. The mount looked great, but the proof would be in the installation and performance.
Real-World Testing: Putting AT3 Tactical RCO Riser Mount for MRO Pattern Optics to the Test
First Use Experience
I first tested the AT3 Tactical RCO Riser Mount for MRO Pattern Optics at an outdoor shooting range on a sunny, 75-degree day. Installation on my Colt M4 Carbine was straightforward, taking only a few minutes using the provided Torx wrench. I initially set it up for lower 1/3 cowitness with my iron sights.
The riser immediately improved my sight picture and target acquisition speed. Achieving proper cheek weld was significantly easier, and transitioning between the MRO and my iron sights felt intuitive. After about 100 rounds of 5.56, the mount remained securely attached with no noticeable loosening.
Extended Use & Reliability
After several months of use, including multiple range trips and a weekend tactical training course, the AT3 Tactical RCO Riser Mount for MRO Pattern Optics has held up admirably. The anodized finish shows minimal wear, even after exposure to mud, rain, and the occasional bump against barricades. Cleaning is simple; a quick wipe-down with a lightly oiled cloth is all that’s needed.
I’ve experienced no issues with the mount loosening or shifting, even after hundreds of rounds and repeated disassembly/reassembly. It’s worth noting that I always use a torque wrench to ensure proper screw tension, and I recommend others do the same. Compared to a previous, less robust mount I used, the AT3 Tactical offers a significant improvement in stability and reliability.
Breaking Down the Features of AT3 Tactical RCO Riser Mount for MRO Pattern Optics
Specifications
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics is designed specifically for the Trijicon MRO and MRO-pattern optics. It features a 6061-T6 aluminum construction, finished with a durable black anodizing. The mount’s length is 2.6 inches, with a height of 1.41 inches.
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics is designed for AR Platform guns. Weighing in at a mere 1.1 oz., it adds minimal bulk to your rifle. It utilizes a Picatinny attachment type, ensuring compatibility with most AR-15 upper receivers. These specifications are crucial because they directly impact the mount’s weight, durability, and compatibility with other components.
Performance & Functionality
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics performs its core function flawlessly: securely raising the MRO to the optimal height for comfortable and efficient use on an AR-15. The cantilever design offers slightly more flexibility in eye relief adjustment compared to standard block-style risers. The included height spacer allows users to choose between absolute and lower 1/3 cowitness, catering to individual preferences.
The mount’s primary strength is its simplicity and effectiveness. The skeletonized design reduces weight without sacrificing structural integrity. Its one potential weakness is the lack of a quick-detach (QD) mechanism, which might be a dealbreaker for some users. Overall, the mount meets and exceeds expectations for a budget-friendly MRO riser.
Design & Ergonomics
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics features a clean, functional design. The 6061-T6 aluminum feels robust, and the anodized finish provides excellent corrosion resistance. Its lightweight construction is a definite plus, especially for those concerned about adding unnecessary weight to their rifle.
The mount is exceptionally user-friendly; even novice shooters should have no trouble installing it. The cantilever design is a nice touch, providing a more streamlined appearance and improved ergonomics.
Durability & Maintenance
Given its aluminum construction and robust anodized finish, the AT3 Tactical RCO Riser Mount for MRO Pattern Optics should provide years of reliable service. Minor scratches and scuffs are to be expected with regular use, but the finish seems resistant to significant damage. Maintenance is minimal, requiring only occasional cleaning and lubrication of the screws.
Accessories and Customization Options
The kit includes all necessary screws and a Torx wrench for installation. The primary customization option is the choice between absolute and lower 1/3 cowitness, achieved by adding or removing the included height spacer. The mount is compatible with any Trijicon MRO or MRO-pattern optic.
Pros and Cons of AT3 Tactical RCO Riser Mount for MRO Pattern Optics
Pros
- Affordable Price: The AT3 Tactical RCO Riser Mount for MRO Pattern Optics offers excellent value for the money, significantly undercutting comparable options from other manufacturers.
- Lightweight Design: The skeletonized design minimizes added weight, preserving the rifle’s balance and maneuverability.
- Cantilever Design: The forward angle provides slightly more flexibility in eye relief adjustment.
- Durable Construction: The 6061-T6 aluminum and anodized finish ensure long-lasting performance.
- Easy Installation: The included hardware and clear instructions make installation a breeze.
Cons
- No QD Mechanism: The lack of a quick-detach system may be a drawback for some users.
- Basic Finish: While durable, the anodized finish is not as aesthetically refined as some higher-end mounts.
Who Should Buy AT3 Tactical RCO Riser Mount for MRO Pattern Optics?
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics is perfect for budget-conscious AR-15 owners who want a reliable and effective way to mount their Trijicon MRO. It’s ideal for recreational shooters, home defense enthusiasts, and anyone looking for a simple, no-nonsense optic mounting solution. Those who require a quick-detach system or a more aesthetically refined finish should consider other options.
A must-have accessory would be a quality torque wrench to ensure proper screw tension during installation. Loctite (blue) is also recommended for added security.
Conclusion on AT3 Tactical RCO Riser Mount for MRO Pattern Optics
The AT3 Tactical RCO Riser Mount for MRO Pattern Optics delivers exceptional value for its price point. It’s a well-designed, durable, and easy-to-install mount that effectively addresses the common issue of MRO height on AR-15 platforms. The price is absolutely justified, considering its performance and build quality.
I would absolutely recommend it to anyone seeking an affordable and reliable MRO riser. If you’re looking for a simple, effective solution to improve your AR-15’s ergonomics and sight picture, the AT3 Tactical RCO Riser Mount for MRO Pattern Optics is an excellent choice. Upgrade your shooting experience today!