Finding the right lower receiver is crucial for building your AR-15 style firearm. This guide dives deep into the specifics of FN lower receivers, focusing on the stripped versions and what makes them stand out. We'll cover everything from material and manufacturing to legality and where to find them.
Understanding the FN Lower Receiver
The lower receiver is the serialized part of any AR-15, making it the regulated component subject to federal laws. FN Herstal, a renowned firearms manufacturer, produces high-quality lowers known for their precision and durability. A stripped FN lower receiver means it comes without any internal parts, like the trigger group or fire control components. This allows builders to customize their rifles entirely, selecting parts based on preference and budget.
Material and Manufacturing
FN lowers are typically constructed from 7075-T6 aluminum, a strong, lightweight alloy commonly used in aerospace and military applications. This material offers excellent strength-to-weight ratio, vital for reliable firearm performance. The manufacturing process involves precise machining to ensure dimensional accuracy and consistent quality. FN's reputation for quality control contributes to the reliability and longevity of their lowers.
Key Features of a Stripped FN Lower
- Mil-Spec Dimensions: FN lowers adhere to military specifications, guaranteeing compatibility with a wide range of AR-15 parts. This means you have far more choices when selecting your components.
- Durable Finish: Usually featuring a hard-coat anodizing, these lowers resist wear and tear, protecting against corrosion. Different finishes may be available (e.g., black, gray, etc.), giving builders some aesthetic customization options.
- Roll Markings: FN lowers typically include the manufacturer's markings, indicating authenticity and traceability. These markings are important for legal compliance.
- No Internal Parts: As a stripped receiver, you'll need to source and install the trigger group, hammer, disconnector, etc. This provides complete customization freedom.
Legality and Regulations
It is crucial to understand the legal implications before purchasing a stripped lower receiver. Federal and state laws vary significantly concerning firearm ownership. Always check your local and state regulations before purchasing any firearm parts, including a lower receiver. You'll likely need to pass a background check and comply with all applicable laws. Improper handling can lead to severe legal consequences. Failure to comply with the law can result in hefty fines and/or imprisonment.
Background Checks and Compliance
Most jurisdictions require a background check for firearm purchases, including lower receivers. The process and requirements vary by location. Always ensure compliance with local laws.
Finding and Purchasing a Stripped FN Lower
Several reputable online and brick-and-mortar retailers offer stripped FN lowers. Always purchase from a licensed dealer to ensure legality and authenticity. Check reviews, compare prices, and ensure they're shipping to your location legally.
Online Retailers
Numerous online retailers sell firearms parts, including lower receivers. Research thoroughly to select a trusted vendor with a good reputation and secure payment processing.
Local Dealers
Local gun stores often carry FN lowers, offering the benefit of in-person examination and consultation. This is a good option for those who prefer the hands-on approach.
Assembling Your AR-15
Once you have your stripped FN lower receiver, you can begin the process of assembling your AR-15. Numerous resources (both online and printed) can guide you through each step. This requires careful attention to detail and adherence to safety protocols.
Conclusion
The stripped FN lower receiver provides a solid foundation for building a custom AR-15. Its quality, compatibility, and adherence to mil-spec standards make it a popular choice among builders. However, remember that legal compliance is paramount. Always check your local and state regulations before purchasing and assembling any firearm. Understand the responsibilities of gun ownership and handle firearms safely and responsibly. Remember to always consult with knowledgeable individuals and resources if you have any questions or concerns throughout the build process.