Building your own AR-15 can be a rewarding experience, offering customization and a deeper understanding of your firearm. A crucial component in this process is the lower parts kit (LPK). This guide will delve into the specifics of PSA lower parts kits, exploring their features, benefits, and what to consider when choosing one for your build. We'll also touch upon some frequently asked questions to ensure you're fully informed before making your purchase.
What is a PSA Lower Parts Kit?
A PSA (Palmetto State Armory) lower parts kit contains all the essential components needed to complete the lower receiver of your AR-15. Unlike the upper receiver, which handles the barrel and bolt carrier group, the lower receiver houses the fire control group, which is responsible for the firearm's functionality. The PSA LPK typically includes parts such as:
- Lower Receiver: (Note: This is not included in the kit; you must purchase this separately).
- Trigger: The mechanism that initiates the firing sequence.
- Hammer: Strikes the firing pin, igniting the primer.
- Disconnector: Prevents the rifle from firing fully automatic.
- Bolt Catch: Locks the bolt open after the last round is fired.
- Magazine Catch: Releases the magazine.
- Grip Screw: Secures the pistol grip.
- Pistol Grip: Provides a comfortable and secure hold.
- Buttstock: (Often included in some kits, but not all) Provides a shoulder rest for stability and recoil management.
- Buffer Tube: (Often included in some kits, but not all) Houses the buffer spring and buffer.
- Buffer Retaining Pin: Secures the buffer tube.
- Takedown Pins: Allow for easy disassembly of the upper and lower receivers.
- Other small parts
Choosing the Right PSA Lower Parts Kit
While PSA offers various LPKs, several key factors should guide your selection:
- Budget: PSA offers a range of kits to suit different budgets, from basic functional kits to those with enhanced features.
- Material: Most PSA kits utilize quality materials, but paying attention to the specifics of each component, such as the trigger material, can be helpful.
- Features: Consider whether you need specific features, such as an enhanced trigger or an ambidextrous safety selector.
- Compatibility: Ensure the kit is compatible with your chosen lower receiver and other components. PSA generally provides good compatibility across their product lines.
Benefits of Using a PSA Lower Parts Kit
- Cost-Effective: PSA LPKs are generally very affordable, making them a popular choice for budget-conscious builders.
- Reliability: PSA has a solid reputation for producing reliable and functional parts.
- Wide Availability: PSA parts are readily available from various online retailers and their own website.
- Ease of Use: The kits typically include all necessary parts for a straightforward installation.
Frequently Asked Questions (FAQs)
Q: Do I need any tools to install a PSA LPK?
A: Yes, you will need basic gunsmithing tools such as a punch set, a hammer, and possibly a torque wrench for certain components.
Q: Can I upgrade individual parts within a PSA LPK later?
A: Absolutely. Many builders start with a standard PSA kit and upgrade specific components, such as the trigger, as their budget and preferences evolve.
Q: What is the warranty on PSA lower parts kits?
A: PSA offers a warranty on their products. It's advisable to check their website for the most up-to-date information on warranty coverage.
Conclusion
Selecting a PSA lower parts kit is a significant step in your AR-15 build. By understanding the components, considering your budget and needs, and utilizing the information provided here, you'll be well-equipped to choose the right kit for your project. Remember to always prioritize safety and follow proper gunsmithing procedures during installation. This guide provides a starting point for your research; further investigation into specific PSA LPK models is always recommended.
