First Impressions of OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver promises a blend of affordability and performance in the ever-growing AR-9 platform. As someone who’s spent years building and modifying AR-platform rifles, including venturing into the pistol caliber carbine world, I was intrigued by the unique design and price point of this particular upper receiver. The diamond-cut M-LOK handguard definitely sets it apart visually, and the promise of reliable 9mm performance in a compact package is hard to resist.
My journey to this upper receiver started with a desire for a compact, easily maneuverable AR-9 for home defense and range fun. I wanted something that could handle various 9mm loads reliably and provide a stable platform for optics. The price point also played a major role, as I aimed for a budget-conscious build without sacrificing quality.
Upon unboxing, my first impression was positive; the Moriarti upper felt solid and well-assembled. The anodized finish appeared even and durable, and the diamond-cut handguard felt surprisingly comfortable in hand. The weight felt appropriate for an 8.3-inch barreled AR-9, not too heavy, but certainly not flimsy.
I’d previously considered similar uppers from other manufacturers like Palmetto State Armory and Brownells. I ultimately chose the OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver due to its unique handguard design and the seemingly positive reviews regarding its reliability. The price, being very competitive, sealed the deal.
Initially, I was excited. The unique look, combined with the Moriarti name, and the OpticsPlanet exclusive nature, made me hopeful that this upper receiver would be a solid performer. The initial feel of the components suggested a good build, but the real test would, of course, be at the range.
Real-World Testing: Putting OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver to the Test
First Use Experience
My initial testing took place at my local outdoor shooting range. I paired the Moriarti upper with a dedicated AR-9 lower receiver, loaded up several magazines with a mix of 115-grain, 124-grain, and 147-grain 9mm ammunition, and got to work. The weather was clear, with a slight breeze and temperatures in the mid-60s – ideal conditions for shooting.
The upper receiver ran flawlessly through the first 100 rounds. There were no failures to feed, extract, or eject, regardless of the ammunition used. The recoil was manageable and typical for a blowback AR-9, and the pistol felt surprisingly accurate at 25 yards with just iron sights.
After the initial 100 rounds, I did notice the charging handle felt a bit gritty, which I initially attributed to the newness of the receiver. Otherwise, the first range trip was a resounding success, exceeding my initial expectations.
Extended Use & Reliability
After several weeks of use and approximately 500 rounds fired, the OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver has continued to perform admirably. I’ve taken it to several more range trips, including one particularly dusty day, and it hasn’t skipped a beat.
There are no significant signs of wear and tear. The anodized finish has held up well, even with some rough handling and storage in a range bag. I field strip and clean the upper receiver after each range session, which is a simple and straightforward process.
The Moriarti upper has proven to be more reliable than my previous experience with a budget AR-9 upper from a lesser-known manufacturer. It handles a wider variety of ammunition with greater consistency, and the overall build quality instills more confidence.
Breaking Down the Features of OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver
Specifications
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver features a 9mm Luger chambering, making it compatible with a wide range of readily available ammunition. The 8.3-inch barrel strikes a balance between compactness and ballistic performance, while the 1-10 twist rate is well-suited for stabilizing common 9mm bullet weights.
The upper utilizes a 1/2×36 thread pitch for the muzzle device, allowing for compatibility with many 9mm suppressors and muzzle brakes. It has an anodized black finish for corrosion resistance and a sleek appearance. The 7-inch M-LOK handguard provides ample space for mounting accessories and features a top Picatinny rail for optics.
The specifications matter because they directly impact the performance and versatility of the upper receiver. The barrel length influences accuracy and muzzle velocity, while the handguard dictates the available mounting options. The 9mm chambering allows for affordable and widely available ammunition, and the 1/2×36 threads increase the potential for customization.
Performance & Functionality
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver performs its job admirably. It cycles reliably with a variety of 9mm ammunition, providing consistent accuracy at typical pistol ranges. The blowback system is simple and reliable, contributing to the overall ease of use.
The primary strength lies in its reliability and affordability. It delivers consistent performance without breaking the bank. A potential weakness is the lack of a last round bolt hold open (LRBHO) feature, which some shooters may find inconvenient.
The Moriarti upper mostly exceeds expectations. Given the price point, I anticipated some potential issues, but it has proven to be a reliable and accurate platform. The lack of LRBHO is a minor drawback, but not a deal-breaker.
Design & Ergonomics
The build quality is solid, with the Moriarti upper receiver featuring a well-machined upper receiver and a durable anodized finish. The weight is manageable, making it comfortable to handle and shoot for extended periods. The 7-inch diamond-cut M-LOK handguard provides a comfortable and secure grip.
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver is user-friendly, with no significant learning curve. It easily mounts to any mil-spec AR-9 lower receiver and is compatible with standard AR-15 charging handles.
Durability & Maintenance
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver appears to be built to last, with a robust design and durable materials. Regular cleaning and lubrication will ensure optimal performance and longevity.
Maintenance is simple, requiring only basic tools and readily available cleaning supplies. The blowback design minimizes the number of parts that require cleaning, and the anodized finish is easy to wipe down.
Accessories and Customization Options
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver does not come with any included accessories, such as a bolt carrier group or charging handle. The 7-inch M-LOK handguard provides ample space for attaching accessories like sights, lights, lasers, and grips.
The upper receiver is compatible with a wide range of aftermarket accessories designed for the AR-9 platform. This includes various bolt carrier groups, charging handles, and muzzle devices. The M-LOK handguard allows for attaching accessories from Magpul, BCM, and other popular brands.
Pros and Cons of OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver
Pros
- Affordable price point makes it accessible to budget-conscious builders.
- Unique diamond-cut M-LOK handguard provides a distinctive look and comfortable grip.
- Reliable performance with a variety of 9mm ammunition.
- Solid build quality ensures durability and longevity.
- Compact 8.3-inch barrel provides excellent maneuverability.
Cons
- Lacks last round bolt hold open (LRBHO).
- Does not include bolt carrier group or charging handle.
Who Should Buy OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver?
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver is perfect for budget-minded AR-9 builders looking for a reliable and visually appealing upper receiver. It is also ideal for those seeking a compact and maneuverable firearm for home defense or recreational shooting.
This product is not recommended for shooters who require a last round bolt hold open feature. It is also not a good choice for those who prefer to purchase a complete upper receiver assembly, as it does not include a bolt carrier group or charging handle.
A must-have accessory is a quality bolt carrier group specifically designed for 9mm AR-9s. A decent charging handle is also necessary. Some users may also want to consider adding a red dot sight or other optic for improved accuracy.
Conclusion on OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver
The OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver offers an impressive blend of affordability, reliability, and unique aesthetics. While it lacks a last round bolt hold open and doesn’t include a bolt carrier group or charging handle, its solid performance and distinctive diamond-cut handguard make it a compelling option for budget-conscious AR-9 enthusiasts.
The price is justified, especially considering the quality of the components and the reliable performance. It represents a solid value in the AR-9 market.
I would personally recommend the OpticsPlanet Exclusive Moriarti AR-9 8.3 inch 9mm Luger Complete Upper Receiver to anyone looking to build a budget-friendly and reliable AR-9. If you are on the fence, take the plunge – you won’t be disappointed!