First Impressions of OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver
The OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver promises versatility and affordability, capable of adapting to multiple AR platform builds. With its billet aluminum construction and compatibility with various calibers, it’s an attractive option for budget-conscious builders.
My journey to this upper receiver began with a desire to build a dedicated .300 Blackout pistol without breaking the bank. I was looking for a cost-effective option that could handle the pressures of .300 BLK while maintaining decent accuracy and reliability, and the Moriarti seemed to fit the bill.
Upon unboxing, the upper receiver felt surprisingly solid for its price point. The black anodized finish appeared even and well-applied, though the machining showed some minor tool marks upon closer inspection. I was initially optimistic, as the weight felt appropriate for a billet receiver, and the slick-side design appealed to my preference for a streamlined AR pistol.
I considered other budget uppers from brands like Anderson Manufacturing and PSA, but the OpticsPlanet Exclusive Moriarti stood out due to its compatibility with multiple calibers. I also wanted to try a billet receiver without spending a fortune. My first impression was a mix of excitement and cautious optimism, hoping the performance would match the initial promise of affordability and versatility.
Real-World Testing: Putting OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver to the Test
First Use Experience
My initial testing took place at an indoor shooting range, focusing on function checks with a .300 Blackout barrel and bolt carrier group. The first attempt to install the BCG was met with significant resistance. It required considerable force to seat the BCG, and noticeable scratches appeared inside the receiver after just a few cycles.
I ran a few magazines through it, and while it cycled, the tight tolerances raised concerns about long-term reliability. Ejection was consistent, but the overall experience felt rough and unrefined. This initial experience was disappointing, as the tight fit suggested potential issues with parts compatibility and smooth operation.
Extended Use & Reliability
After approximately 500 rounds, the OpticsPlanet Exclusive Moriarti showed signs of wear beyond what I would expect. The anodizing near the ejection port started to fade, and the internal scratching worsened with each use.
Cleaning was relatively straightforward, but the tight tolerances made it difficult to remove carbon buildup in certain areas. Compared to my experiences with higher-end receivers, the Moriarti underperformed significantly in terms of durability and smooth operation. The initial cost savings didn’t seem worth the compromised reliability and longevity.
Breaking Down the Features of OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver
Specifications
The OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver boasts several key specifications that define its capabilities. It features a T6 6061 billet aluminum construction, offering a balance between strength and weight.
The receiver is finished with a black anodized coating, providing some corrosion resistance and a sleek appearance. It is designed to be compatible with AR-15 platforms chambered in AR-15/47/9/300 calibers. The absence of a forward assist gives it a slick-side profile, and it is adaptable for use with or without a dust cover. These specs suggest a versatile and lightweight platform.
Performance & Functionality
In terms of performance, the OpticsPlanet Exclusive Moriarti functions, but with notable drawbacks. The tight tolerances, while potentially beneficial for accuracy in theory, caused significant friction and operational issues.
While it successfully chambered and ejected rounds, the rough cycling and internal scratching raised serious concerns about long-term reliability. The receiver met the basic requirements of an upper receiver, but it fell short of delivering a smooth and dependable shooting experience. The tight tolerances are both its strength and weakness.
Design & Ergonomics
The OpticsPlanet Exclusive Moriarti’s design prioritizes simplicity and affordability. The billet aluminum construction feels solid, though the finish quality is not on par with higher-end options.
The slick-side design is visually appealing, but the lack of a forward assist may be a drawback for some users. There is no major learning curve, and it is a standard AR-15 upper receiver.
Durability & Maintenance
Durability is a significant concern with the OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver. The anodized finish showed wear relatively quickly, and the internal scratching suggested potential long-term damage.
Maintenance is straightforward, but the tight tolerances made cleaning more challenging. I doubt this upper receiver would withstand heavy use over an extended period. The Moriarti’s long-term durability appears questionable.
Accessories and Customization Options
The OpticsPlanet Exclusive Moriarti accepts standard AR-15 accessories, offering ample customization potential. It readily accepts various handguards, barrels, and optics.
The dust cover adaptability allows for further customization based on user preference. While the Moriarti is compatible with a wide range of AR-15 accessories, its performance limitations may negate some of the benefits of higher-end upgrades. There are no included accessories, and you need to acquire dust cover components separately.
Pros and Cons of OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver
Pros
- Affordable entry point for AR builds.
- Billet aluminum construction offers decent strength.
- Slick-side design provides a streamlined appearance.
- Compatible with multiple AR calibers (AR-15/47/9/300).
- Adaptable for use with or without a dust cover.
Cons
- Extremely tight tolerances cause cycling issues and internal scratching.
- Anodized finish shows wear quickly.
- Questionable long-term durability.
Who Should Buy OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver?
The OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver is ideal for budget-conscious builders seeking an entry-level option for a range toy or safe queen. It could also be viable for those with advanced gunsmithing skills who are willing to lap the receiver to improve BCG fitment.
This product should be skipped by anyone prioritizing reliability, durability, or smooth operation. High-volume shooters and those building duty or defense rifles should avoid this upper.
A must-have modification would involve lapping the inside of the receiver to improve BCG fitment, and a high-quality BCG can reduce friction. This upper requires some work to improve performance.
Conclusion on OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver
The OpticsPlanet Exclusive Moriarti AR-15/47/9/300 Billet Upper Receiver offers an affordable entry into the world of AR builds. However, the tight tolerances, questionable durability, and operational issues detract from its overall value.
The price is certainly justified if you are strictly looking for a low-cost receiver for a build that will not see a high round count. I would not personally recommend it for serious use without significant modifications and a thorough understanding of its limitations.
If you’re on a tight budget and willing to accept compromises, the Moriarti might suffice. However, investing in a higher-quality upper receiver will likely save you time, money, and frustration in the long run. Buyer beware, and consider alternatives before committing to this budget option.