The KAC FF RAS Long, or Knight’s Armament Company Free-Floating Rail Adapter System (Long), is a high-quality handguard designed to enhance the modularity and performance of AR-15-style rifles. Renowned for its durability and precision engineering, this rail system allows shooters to customize their firearms with various accessories while maintaining accuracy and reliability.
Overview of the KAC FF RAS Long
Knight’s Armament Company (KAC) has been a pioneer in developing advanced weapon accessories for military and civilian use. The FF RAS Long is a testament to KAC’s commitment to quality and innovation, offering a free-floating design that prevents the handguard from contacting the barrel, thereby preserving the rifle’s accuracy.
Key Features:
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Free-Floating Design: By not touching the barrel, the handguard eliminates external pressures that could affect shot placement, ensuring consistent accuracy.
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Extended Length: The “Long” version provides additional rail space, accommodating various accessories such as foregrips, bipods, and lasers, enhancing the rifle’s versatility.
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Quad Rail System: Featuring Picatinny rails on all four sides, it allows for secure attachment of accessories, enabling shooters to customize their setup according to mission requirements or personal preference.
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Robust Construction: Manufactured from high-grade aluminum, the FF RAS Long is both lightweight and durable, capable of withstanding rigorous use in various environments.
Installation and Compatibility
Installing the KAC FF RAS Long requires some technical proficiency, as it involves removing the existing handguard and possibly the front sight base. It’s recommended to have a qualified gunsmith perform the installation to ensure proper fit and function.
Compatibility Considerations:
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Barrel Length: The long version is best suited for rifles with longer barrels, typically 20 inches, providing a seamless integration and optimal balance.
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Gas System: Designed to work with standard gas systems, but modifications may be necessary for non-standard setups.
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Upper Receiver: Compatible with most Mil-Spec upper receivers, but it’s essential to verify fitment before installation.
Benefits of Using the KAC FF RAS Long
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Enhanced Accuracy: The free-floating design ensures that external forces do not interfere with barrel harmonics, maintaining the rifle’s inherent accuracy.
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Customization: With ample rail space, shooters can attach multiple accessories, tailoring the rifle to specific applications, whether it’s tactical operations, competition shooting, or hunting.
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Durability: Built to military standards, the FF RAS Long can endure harsh conditions, providing reliable performance over extended periods.
Maintenance and Care
To ensure the longevity and optimal performance of the KAC FF RAS Long, regular maintenance is essential:
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Cleaning: Periodically remove the handguard to clean any debris or residue, especially after exposure to harsh environments.
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Inspection: Check for any signs of wear or damage, particularly around the mounting points and rail sections.
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Lubrication: Apply a light coat of appropriate lubricant to prevent corrosion, following the manufacturer’s guidelines.
Conclusion
The KAC FF RAS Long is a premium handguard option for shooters seeking to enhance their AR-15-style rifles with a durable, versatile, and accuracy-preserving accessory. Its free-floating design, extended rail space, and robust construction make it a valuable addition for those who demand performance and reliability.
FAQ
1. What is the weight of the KAC FF RAS Long?
The exact weight can vary, but it is approximately 1.5 pounds, offering a balance between durability and maneuverability.
2. Can I install the FF RAS Long myself?
While it’s possible, professional installation by a qualified gunsmith is recommended to ensure proper fit and function.
3. Is the FF RAS Long compatible with M-LOK accessories?
No, it features Picatinny rails. However, adapters are available to mount M-LOK accessories if desired.
4. Does the handguard come with rail covers?
Some packages may include rail covers, but it’s best to verify with the retailer or manufacturer.
5. Will the FF RAS Long fit on a carbine-length gas system?
It’s primarily designed for rifles with longer barrels and standard gas systems; compatibility with carbine-length systems may require modifications.
