Description
The Radical Firearms AR-15 FGS .300 AAC Blackout,16″, 6-Position Stock, Black Hard Coat Anodized is a budget-friendly, ready-to-shoot AR-15 platform rifle chambered in the versatile .300 Blackout caliber. It features a 16-inch barrel, a six-position adjustable stock, and a hard coat anodized finish for durability, offering a solid entry point into the .300 BLK world without a hefty price tag. This rifle is designed for value-conscious shooters who want a functional, no-fuss firearm that’s drop-in ready for standard accessories.
Key Features
- Chambered in .300 AAC Blackout: A versatile round effective for hunting, home defense, and suppressed shooting.
- 16-Inch Barrel: Provides a good balance of velocity and maneuverability, keeping it a rifle-length firearm.
- 6-Position Adjustable Stock: Allows for custom length-of-pull to fit a wide range of shooters and gear setups.
- Black Hard Coat Anodized Finish: Offers corrosion resistance and a durable, low-glare exterior.
- Forward Gas System (FGS): A mid-length gas system for reliable cycling and potentially softer recoil impulse.
- Complete Upper Receiver: Comes fully assembled, ready to mate with a compatible lower.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber | .300 AAC Blackout |
| Barrel Length | 16 inches |
| Stock | 6-Position Adjustable M4 Style |
| Finish | Black Hard Coat Anodized |
| Gas System | Mid-Length (FGS) |
| Handguard | Standard M-LOK compatible (assumed for model) |
Here’s the thing—at $492.93, this Radical Firearms upper represents a significant cost savings compared to building a similar .300 Blackout upper from scratch or buying from premium brands. You’re getting a functional, tested platform that works with standard AR-15 lowers you might already own. That said, remember that this price is for the complete upper assembly; you’ll need a lower receiver, bolt carrier group, and charging handle to complete the rifle. The total weight of a built rifle will typically land between 6.5 and 7.5 pounds, depending on your lower and optic choice.
Who This Rifle Is For
This Radical Firearms build is ideal for the practical shooter on a budget. It’s for the Missouri hunter wanting a capable deer rifle at close to medium range, or the home defender seeking a potent, compact option. It’s also a perfect first step for a tinkerer who wants to explore the .300 Blackout cartridge without a major financial commitment. If you already have an AR-15 lower, this upper makes conversion simple.
Pros & Cons
Pros: The primary advantage is outright value. You get a shooting .300 Blackout platform for well under five hundred dollars. The mid-length gas system is generally reliable, and the 16-inch barrel keeps you compliant without needing to navigate NFA paperwork for a short-barreled rifle (SBR). The hard coat anodizing is a durable, no-nonsense finish that holds up to range use. It’s a straightforward tool that fits out of the box with most mil-spec parts.
Cons: At this price point, expect basic components. The barrel may not be match-grade, and the trigger in a budget lower will be serviceable, not exceptional. You might find the handguard to be a bit basic compared to higher-end free-float rails. Since it’s an upper-only product, the final cost and performance depend heavily on the quality of the lower receiver and BCG you pair it with. This model is available at firearms-missouri.com for Missouri residents and nationwide, following all applicable laws.
Frequently Asked Questions
Q: Is this a complete rifle or just an upper receiver?
A: This is a complete upper receiver assembly. It includes the barrel, handguard, gas system, and upper receiver, but does not include a lower receiver, bolt carrier group (BCG), or charging handle. You will need these components to build a functional firearm.
Q: What kind of lower receiver do I need for this?
A: You need a standard AR-15 stripped or complete lower receiver. It is compatible with most mil-spec lowers from brands like Anderson Manufacturing, Aero Precision, or Palmetto State Armory. Just ensure your lower is legally transferred through an FFL.
Q: Can I shoot both supersonic and subsonic .300 Blackout ammunition through this?
A: Yes, the 16-inch barrel and mid-length gas system are designed to cycle both types of ammunition reliably. However, subsonic rounds will typically not cycle the action without a suppressor attached, as they generate less gas pressure. Always consult your firearm’s manual and test your specific setup.
For a dependable, budget-conscious entry into the .300 AAC Blackout platform, the Radical Firearms upper delivers solid performance where it counts. See the full details on our site.


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