Building your own AR-15 lower receiver can be a rewarding experience, offering a level of customization unavailable with pre-built rifles. But navigating the world of parts and finding a quality kit can be daunting. This guide focuses on BCM lower build kits, exploring their benefits, what to look for, and how to assemble them.
Why Choose a BCM Lower Build Kit?
Bravo Company Manufacturing (BCM) is a highly respected name in the AR-15 community, known for its commitment to quality and durability. Their lower build kits reflect this reputation, offering several advantages:
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Superior Materials: BCM utilizes high-quality materials in their manufacturing process, ensuring a robust and reliable lower receiver. This translates to increased longevity and performance compared to budget-friendly alternatives.
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Precise Manufacturing: BCM's commitment to precision machining results in a lower receiver that fits together flawlessly with other components. This minimizes fitting issues and ensures a smooth assembly process.
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Reputable Brand: The BCM name carries significant weight in the AR-15 community. Choosing a BCM kit provides peace of mind, knowing you're investing in a reputable product backed by a strong brand reputation.
What's Included in a BCM Lower Build Kit?
BCM lower build kits typically include the following components:
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Lower Receiver: This is the foundation of your AR-15, housing the trigger group and fire control components. BCM lowers are known for their impeccable fit and finish.
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Lower Parts Kit (LPK): This kit contains all the necessary small parts to complete the lower receiver, including the trigger, hammer, disconnector, safety selector, springs, and pins. BCM LPKs are renowned for their reliability and smooth operation.
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Buffer Tube: This component houses the buffer spring and buffer, contributing to the rifle's recoil system.
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Castle Nut: This nut secures the buffer tube to the receiver extension.
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End Plate: This covers the rear of the buffer tube.
Assembling Your BCM Lower Build Kit: A Step-by-Step Guide
While a detailed step-by-step guide would require extensive visuals, here's a summarized overview of the process:
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Prepare your workspace: Ensure a clean and well-lit area with the necessary tools.
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Install the LPK: Carefully install each component of the LPK into the lower receiver, ensuring proper orientation and alignment.
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Attach the Buffer Tube: Securely attach the buffer tube to the receiver extension using the castle nut and end plate.
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Install the Buffer and Spring: Insert the buffer spring and buffer into the buffer tube.
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Final Checks: After assembly, perform a thorough inspection to ensure all parts are correctly installed and function smoothly. Consult a detailed video tutorial for a visual guide.
Beyond the Basic Kit: Considerations and Upgrades
While the basic BCM lower build kit provides everything needed to complete a functional lower receiver, consider these options for upgrades:
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Enhanced Trigger: Upgrading to a high-quality trigger can significantly improve your shooting experience.
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Enhanced Safety Selector: A more robust and ergonomic safety selector can enhance user experience.
Finding Your BCM Lower Build Kit
BCM lower build kits are readily available from reputable firearms retailers, both online and brick-and-mortar stores. Always ensure you are purchasing from an authorized dealer to guarantee authenticity and avoid counterfeit products.
Disclaimer: Building and owning firearms involves significant responsibility. Always adhere to all applicable federal, state, and local laws and regulations. It is crucial to understand firearm safety before handling or assembling any firearm components. If you are unfamiliar with AR-15 assembly, seeking guidance from an experienced gunsmith is highly recommended.
