Building your own AR-15 can be a rewarding experience, offering a level of customization unavailable with pre-assembled rifles. A crucial component of this process is selecting the right lower parts kit. This guide delves into the specifics of PSA lower parts kits, helping you understand what to look for and ensuring you make an informed decision.
Understanding the PSA Lower Parts Kit
Palmetto State Armory (PSA) is a popular choice for AR-15 components, including their widely-available lower parts kits. These kits contain all the essential parts needed to complete the lower receiver of your AR-15, excluding the lower receiver itself. This means you'll already need a stripped lower receiver before purchasing a lower parts kit. A complete PSA lower parts kit typically includes:
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Lower Receiver Parts: These are the internal components that make the lower receiver functional. This usually includes the trigger, hammer, disconnector, trigger pins, hammer pin, and springs.
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Grip: Provides a comfortable and secure hold on the firearm. PSA offers various grip options, from basic to enhanced designs.
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Buffer Tube: Houses the buffer spring and buffer, crucial for the rifle's operation.
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Castle Nut & End Plate: These secure the buffer tube to the lower receiver.
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Pistol Grip Screw: Secures the pistol grip to the lower receiver.
Important Note: Always verify the specific contents of the PSA lower parts kit you intend to purchase, as variations may exist depending on the model and any included upgrades.
Choosing the Right PSA Lower Parts Kit: Key Considerations
While PSA offers a range of kits, several factors should guide your selection:
1. Budget:
PSA provides options across different price points. While more expensive kits might include enhanced components, a standard kit often suffices for many builders. Determine your budget before browsing.
2. Material Quality:
Pay attention to the materials used in the kit's components. Higher-quality materials generally lead to increased durability and reliability. Look for descriptions highlighting materials like 8620 steel for critical components.
3. Intended Use:
Consider how you'll use your AR-15. If it's for competition shooting, a high-quality trigger might be a worthwhile investment. For home defense or recreational shooting, a standard trigger often works well.
4. Compatibility:
Ensure the kit is compatible with your chosen lower receiver and other components. Most PSA kits are compatible with standard AR-15 lowers, but verifying this is crucial.
Beyond the Basics: Upgraded PSA Lower Parts Kits
PSA also offers upgraded kits with enhanced features, such as:
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Enhanced Triggers: These triggers often provide a smoother, crisper pull, beneficial for both accuracy and speed.
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Improved Springs: Higher-quality springs can contribute to increased reliability and longevity.
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Enhanced Safety Selectors: These offer improved ergonomics and a more positive feel.
These upgraded components can significantly enhance the overall performance and feel of your AR-15, but they typically come at a higher cost.
Assembling Your PSA Lower Parts Kit
Once you've received your kit, carefully review the assembly instructions. Numerous online resources, including videos, provide step-by-step guidance on assembling an AR-15 lower receiver. Take your time, and ensure each component is properly installed. Improper assembly can lead to malfunctions or even safety hazards.
Conclusion
Choosing the right PSA lower parts kit is a vital step in building your AR-15. By carefully considering your budget, intended use, and material quality, you can select a kit that meets your needs and contributes to a reliable and functional firearm. Remember to always prioritize safety and follow proper assembly procedures.
