300 Blackout Complete Upper

Carter Mitchell
11 min readMar 14, 2024



Welcome to our roundup article on the 300 Blackout Complete Upper. This unique product has been generating quite a buzz in the gun enthusiasts’ community, and we’re excited to dive into its features, benefits, and everything you need to know before considering investing in one. So, buckle up and get ready to learn more about the 300 Blackout Complete Upper.

The Top 6 Best 300 Blackout Complete Upper

  1. Wheeler Delta 300 AAC Blackout Bore Guide for AR-15 Calibers — Enhanced Cleaning & Maintenance Solution — Protect and maintain your AR-15 chamber and bore with the reliable and durable Wheeler Delta Series 300 AAC Blackout Bore Guide, featuring easy cleaning alignment, reduced solvent leakage, and a versatile design fitting up to .30 cal. tactical rifles.
  2. GTS Chrysler 300 2005–2010 Headlight Covers — Carbon Fiber Look Accessories — Upgrade your Chrysler 300’s look with GTS GT0665X Carbon Fiber Look Headlight Covers, offering aerodynamic style, headlight protection, and easy installation in 2005–2010 Chrysler 300 C, SRT, Base, Ltd, and Touring models.
  3. Upgrade Your GTS Chrysler 300 with Stylish Carbon Fiber Look Headlight Covers — GTS Chrysler 300 Blackout Headlight Covers (GT0118X) provide a sleek, aerodynamic look and protect your headlights without drilling or modifications. Perfect for enhancing your vehicle’s style!
  4. Premium 12 Gauge Mesh Grille for Luxury Vehicle Front — Experience ultimate luxury and style with the T-Rex Grilles Upper Class Series Mesh Grille, hand-assembled in the USA and featuring OEM quality precision for an unbeatable front look.
  5. Eliminator300 Vance&Hines Softail Slip-on Exhaust — Eliminator300 PCX Exhaust Softail Vance&Hines: Vance’s innovative PCX catalyst technology enhances torque and cleanliness, while the slip-on design delivers premium sound and performance in a stylish, heat-resistant 3" round silencer.
  6. Stylish Subaru Forester 2.0XT Ride Height Adjustable Coilover Kit — The TEIN STREET ADVANCE Z4 provides a threading-type ride height adjustment system for the Subaru Forester, offering 16-level damping force adjustment for enhanced comfort and handling on various road conditions.

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🔗Wheeler Delta 300 AAC Blackout Bore Guide for AR-15 Calibers — Enhanced Cleaning & Maintenance Solution


Using the Wheeler Delta Series 300 Blackout Bore Guide was like having a trusty companion during my firearm cleaning routine. The anodized aluminum construction and snugly fitting bore guide ensured the chamber was protected from any damage and made cleaning a breeze.

Proper rod alignment and the elimination of solvent leakage provided ease of mind while cleaning. Although it would be nice if the dust cover engagement groove was in the correct place for all barrels, the bore guide did its job well overall. This reliable tool has now become an essential addition to my cleaning routine.

🔗GTS Chrysler 300 2005–2010 Headlight Covers — Carbon Fiber Look Accessories


I recently tried out these Carbon Fiber Look Headlight Covers (GT0665X) by GTS for my Chrysler 300. As someone who appreciates a sleek and stylish look on their car, these headlight covers definitely caught my attention. The installation process was a breeze, requiring no drilling or modifications to my car.

The covers themselves are made from a durable composite material, which gives them a solid and sturdy feel. One of the best features, in my opinion, is the aerodynamic styling these covers bring to my vehicle. They definitely add a unique touch to my car’s appearance.

However, I did notice that without any rubber trim, dust particles can cling to the edges of the covers, making them appear dirtier than they should be. Additionally, the plastic material can scratch easily if not handled with care. Despite these minor drawbacks, I think these headlight covers are worth considering for anyone who wants to enhance the looks of their Chrysler 300.

🔗Upgrade Your GTS Chrysler 300 with Stylish Carbon Fiber Look Headlight Covers


I recently had the opportunity to try out the GTS Chrysler 300 Blackout headlight covers (GT0118X), and I gotta say, they definitely added some style to my ride. The carbon fiber look really does give a sleek and modern touch. Installation was surprisingly easy- peel and stick, no drilling or modifications required.

One thing I noticed was that despite being listed as plastic covers, they actually felt pretty sturdy and long-lasting, thanks to the GTS Composite material used. I also appreciated that the set comes with all the necessary installation hardware and even a GTS logo for a little extra flair.

However, one tiny downside is that they’re not completely seamless with the car’s rubber, so there’s a small gap around the edges. It’s not a deal-breaker, though, and overall, I’m pretty happy with this purchase.

🔗Premium 12 Gauge Mesh Grille for Luxury Vehicle Front


As someone who’s had the chance to use the T-Rex Grilles Upper Class Series Mesh Grille, I have to say, it’s been quite an experience. The precision manufacturing really shines through, giving it an OEM quality fit that I can appreciate. Hand-assembled right here in the USA, this beauty is constructed with top-notch steel mesh, ensuring a stunning and sophisticated look for your vehicle’s front.

One aspect that I particularly loved is the use of 304 stainless steel. Not only does it give this grille a premium feel, but the full formed woven mesh also provides a 3-dimensional appearance that outshines other flat mesh grilles on the market. In terms of drawbacks, I found the installation process to be slightly tricky, but with a bit of extra patience and careful attention to detail, it gets the job done.

Overall, the T-Rex Grilles Upper Class Series Mesh Grille is a reliable and stylish choice for car enthusiasts who demand nothing but the best.

🔗Eliminator300 Vance&Hines Softail Slip-on Exhaust


The Eliminator300 PCX for Softail Vance & Hines is a game-changer for motorcycle enthusiasts. As someone who’s tried it myself, there’s a few features that truly stand out. Firstly, it’s the 3" round silencer that’s got a double-slash cut-end design; it gives the exhaust a premium, stylish look. Then, there’s the easy-install, slip-on design that really makes a difference. The full-coverage heat shield is another excellent addition. It keeps the exhaust shielded, maintaining a gleaming shine.

However, there were some downsides too. I was hoping for a louder sound, as the lowered baffles sounded slightly more impressive in comparison. One customer also chimed in that he was hoping for a louder growl, but as with most exhaust systems, there’s a trade-off between sound level and efficiency.

Over all, this Eliminator300 PCX is quite the upgrade for Harley Softails. It offers a good balance between style, sound, and functionality — but keep in mind, it may not be as loud as you were hoping.

🔗Stylish Subaru Forester 2.0XT Ride Height Adjustable Coilover Kit


I recently tried the Tein VSSA2-G1SS2 Street Advance Z4 Coilover Kit on my 2012 Subaru Forester 2.0XT. The installation process was straightforward, with the coilovers fitting neatly into their respective spots. One feature that stood out to me was the 16-level damping force adjustment, as it allowed me to modify the ride comfort and handling to my preference. The hydraulic bump stopper (H. B. S) was also a standout feature, providing increased comfort and durability with improved handling.

However, I did experience some drawbacks with the Tein VSSA2-G1SS2 Street Advance Z4 Coilover Kit. Firstly, the coilovers couldn’t be adjusted to lower heights, limiting versatility. Additionally, I found the ride to be somewhat stiff, especially on rougher roads. Nonetheless, it had a positive impact on the overall stability and responsiveness of my vehicle.

Buyer’s Guide

Welcome to the buyer’s guide for 300 Blackout Complete Upper! In this section, we’ll cover important features, considerations, and general advice to help you make an informed decision when purchasing a complete upper for your rifle.


Materials and Construction

When selecting a 300 Blackout complete upper, consider the materials and construction. Common materials include stainless steel, aluminum, and polymer, each with its benefits and drawbacks. Stainless steel is durable and resistant to corrosion, while aluminum is lightweight and affordable. Polymer can provide excellent durability and a lower overall weight, but may not be as heat-resistant as other materials.

Barrel Length

The barrel length of your complete upper can affect accuracy, velocity, and overall performance. Common barrel lengths include 10.5", 14.5", and 16". Shorter barrels typically provide greater maneuverability and faster handling but may sacrifice accuracy and velocity. Longer barrels can offer increased accuracy and velocity but may be more difficult to manage in tight spaces.


Thread Pattern

The thread pattern of your complete upper is critical for securing the muzzle brake, compensator, or suppressor. Popular thread patterns include 1/2x28, 5/8x24, and 20x1.5. Ensure that the thread pattern on your complete upper matches the thread pattern of your muzzle device for optimal performance and safety.


The handguard on your complete upper is responsible for protecting your hand from the heat generated by the barrel and providing a stable grip. Many handguards are modular, allowing for the easy installation of accessories such as rail sections, lights, and lasers. Consider the quality of the handguard construction and the availability of accessories when selecting a complete upper for your 300 Blackout rifle.



What is the 300 Blackout Complete Upper?

The 300 Blackout Complete Upper is a pre-built upper receiver assembly that is specifically designed for shooting 300 Blackout ammunition. It is built to offer optimal performance and durability for hunters and shooters who prefer this caliber for its stopping power and accuracy at medium to long distances.

This upper receiver is made from high-quality materials, including a forged or billet aluminum receiver, chrome-lined barrel, and a durable finish. It is designed to work seamlessly with various lower receivers and stocks, making it a versatile choice for different shooting applications. The package includes everything required for installation, along with the necessary instructions.


What are the key benefits of the 300 Blackout Complete Upper?

The 300 Blackout Complete Upper offers several benefits for hunters and shooters, including enhanced accuracy and stopping power. The 300 Blackout cartridge is known for its ability to deliver consistent and reliable performance, even at longer distances. The pre-built upper receiver is designed to make installation and setup quick and straightforward, reducing the overall time spent customizing a rifle.

Additionally, the high-quality materials and construction techniques used in the 300 Blackout Complete Upper ensure durability and reliability. The chrome-lined barrel and the precision machining of the components guarantee consistent and accurate groupings. The package also comes with all the necessary accessories and instructions, making it easy for users to start enjoying their new upper receiver right away.

What types of firearms can the 300 Blackout Complete Upper be used with?

The 300 Blackout Complete Upper is designed to be used with a wide range of firearms, including AR-15, AR-10, and LR308 platforms. It can also be paired with various lower receivers and stocks to create a custom rifle tailored to individual preferences and requirements. The upper receiver is versatile enough to accommodate different barrel lengths, handguards, and optics, making it an ideal choice for hunters and shooters who want a reliable and accurate firearm suitable for different situations.

It is essential to check the compatibility of your chosen lower receiver, stock, and other components with the 300 Blackout Complete Upper to ensure proper installation and performance. Many manufacturers offer guidelines or compatibility charts on their websites, which can help users make the right decisions when assembling their rifle.


How easy is it to install the 300 Blackout Complete Upper on a rifle?

The installation process of the 300 Blackout Complete Upper on a rifle is relatively straightforward. Designed as a drop-in upper receiver, it is compatible with most lower receivers and stocks without the need for any major modifications or customization. The package typically comes with all the necessary accessories and instructions, including a user manual that walks users through each step of the installation process.

However, it is essential to follow the manufacturer’s instructions and guidelines closely to ensure that the upper receiver is installed correctly. This includes checking the compatibility of the lower receiver and other components and ensuring that the firearm is properly assembled and tested before using it.

What is the weight of the 300 Blackout Complete Upper?

The weight of the 300 Blackout Complete Upper can vary depending on the specific design and materials used. Generally, an upper receiver made from high-quality aluminum or steel will weigh between 1.5–3 pounds (0.7–1.4 kg). The combined weight of the upper receiver, barrel, and handguard can range between 3.5–5.5 pounds (1.6–2.5 kg), depending on the length and configuration of the barrel and the material used for the handguard.

It is essential to consider the weight and balance of your firearm, including the upper receiver, when selecting a 300 Blackout Complete Upper. A lighter upper receiver can make the overall firearm easier to carry and maneuver, while a heavier upper receiver can provide additional stability and improve accuracy. Users should choose the upper receiver that best suits their individual needs and preferences.

What is the recommended barrel length for the 300 Blackout Complete Upper?

The ideal barrel length for the 300 Blackout Complete Upper can depend on the specific firearm and shooting application. However, many users prefer a barrel length of around 16 inches (40.6 cm) for a balance between accuracy, weight, and ease of use. This barrel length also offers sufficient velocity and range for most hunting and shooting scenarios. Some users may choose a longer or shorter barrel length, depending on their preferences and requirements.

It is essential to consider the intended use and shooting conditions when selecting a barrel length for the 300 Blackout Complete Upper. A longer barrel can provide improved accuracy and range at the expense of some maneuverability and weight, while a shorter barrel can make the firearm lighter and more maneuverable but may sacrifice some accuracy and range. Users should choose the barrel length that best suits their specific needs and preferences.

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