Palmetto State Armory (PSA) has become a popular choice for building AR-15s and other firearms. Their reputation is built on offering affordable, high-quality parts, making them a go-to for both beginners and experienced builders. This guide will walk you through the process of building your own PSA AR-15, covering everything from selecting parts to assembling the rifle. We'll cover common pitfalls and offer tips for a successful build.
Choosing Your PSA AR-15 Build Kit
The first step in your Palmetto State Armory build is selecting your parts. PSA offers a variety of complete lower receivers, upper receivers, and even complete kits. Choosing a kit can simplify the process significantly, but building from individual components allows for more customization.
Lower Receiver Options:
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Complete Lower Receivers: PSA offers complete lower receivers with all the necessary components installed, such as the trigger group, safety selector, and buffer tube. This significantly reduces the assembly time.
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Stripped Lower Receivers: These receivers require the installation of all components, providing more hands-on experience. This option is good for those who want to fully understand the firearm's mechanics.
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Key Considerations: When selecting a lower, consider the material (usually forged aluminum), the finish (anodized for durability), and any features you desire (such as ambidextrous controls).
Upper Receiver Options:
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Complete Upper Receivers: Similar to lower receivers, complete uppers include the barrel, bolt carrier group, charging handle, and handguard. This greatly streamlines the build process.
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Stripped Upper Receivers: These require the separate purchase and installation of the barrel, bolt carrier group, and other components. This provides greater control over selecting specific parts but demands more knowledge.
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Key Considerations: When choosing an upper, focus on the barrel length (16" is a common choice, but other lengths are available), barrel profile (lightweight, mid-length, heavy), and the material (usually chrome-lined for durability).
Essential Components Beyond the Receivers:
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Bolt Carrier Group (BCG): A critical component, the BCG contains the bolt, carrier, and firing pin. PSA offers various BCGs, and selecting a quality one is paramount for reliability.
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Charging Handle: This is used to manipulate the bolt carrier group. Standard and ambidextrous options are available.
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Handguard: This protects the barrel and offers mounting points for accessories. PSA offers a wide variety of handguards in different materials and styles.
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Barrel Nut Wrench: This specialized tool is essential for installing the barrel nut on the upper receiver.
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Other Tools: You'll need a punch set, a torque wrench, and possibly a vise block for safe and accurate assembly.
Step-by-Step Palmetto State Armory AR-15 Build Guide
The following steps outline the general process of building a PSA AR-15, but always refer to PSA's specific instructions and safety guidelines accompanying your chosen parts.
1. Lower Receiver Assembly:
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Install the trigger group: Carefully insert the trigger group into the lower receiver, ensuring proper alignment.
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Install the safety selector: Insert the safety selector lever into the lower receiver.
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Install the buffer tube: Attach the buffer tube to the rear of the lower receiver.
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Install the buffer and spring: Push the buffer spring onto the buffer tube followed by the buffer.
2. Upper Receiver Assembly:
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Install the barrel nut: Use the barrel nut wrench to tighten the barrel nut to the correct torque specification.
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Install the gas tube: Carefully align and insert the gas tube between the upper and lower receivers.
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Install the bolt carrier group: Insert the BCG into the upper receiver.
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Install the charging handle: Insert the charging handle into the upper receiver.
3. Final Assembly:
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Combine Upper and Lower: Align the upper and lower receivers, making sure everything is correctly seated.
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Test the Function: Perform a function check to ensure the rifle cycles correctly.
Important Note: Always follow the specific instructions provided by Palmetto State Armory for your selected parts. Improper assembly can result in malfunction or even serious injury.
Troubleshooting Your PSA AR-15 Build
Even experienced builders encounter issues. Here are some common problems and solutions:
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Gas System Issues: Inconsistent or unreliable function often relates to problems with the gas system. Ensure proper gas tube installation and alignment.
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Trigger Issues: A poorly installed trigger group can lead to malfunctioning. Double-check the installation.
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Bolt Carrier Issues: A faulty BCG can result in malfunctions. Ensure you've selected a high-quality component and installed it correctly.
Case Study: A Successful PSA Build
One user on a popular firearms forum detailed their experience building a PSA AR-15 pistol using a complete lower and a stripped upper receiver. They meticulously followed the instructions, double-checked all components, and successfully completed their build without any issues. They praised the quality of PSA's parts and the ease of the assembly process. This reinforces the importance of following instructions, using the correct tools, and being methodical throughout the entire process.
Conclusion: Your Palmetto State Armory Build
Building your own AR-15 using parts from Palmetto State Armory can be a rewarding experience. By carefully selecting your components, following the instructions, and taking your time, you can assemble a reliable and accurate firearm that meets your specific needs. Remember to always prioritize safety and follow all applicable laws and regulations.