Building your own AR-15 can be a rewarding experience, offering customization and a deeper understanding of this popular platform. This guide covers everything from selecting components to assembling your PSA AR-15, catering to both newcomers and experienced builders. We'll delve into the process step-by-step, ensuring you build a safe and reliable rifle.
Choosing Your PSA AR-15 Lower Receiver
The lower receiver is the serialized part of the AR-15, legally considered the firearm. Palmetto State Armory (PSA) offers a wide variety of lowers, from budget-friendly options to those with enhanced features. Consider these factors when choosing your lower:
- Material: Most PSA lowers are made from forged 7075-T6 aluminum, a durable and reliable choice.
- Features: Some lowers include features like flared magwells for faster reloads or ambidextrous safety selectors for increased versatility.
- Finish: Anodized finishes provide corrosion resistance. Choose a finish that suits your preferences and intended use.
Remember to always comply with all federal, state, and local laws and regulations when purchasing and assembling your firearm.
Selecting Upper Receiver Components for Your PSA Build
The upper receiver houses the barrel, bolt carrier group (BCG), charging handle, and other essential components. PSA offers a vast selection, allowing for significant customization:
1. Barrel Selection:
- Length: Barrel length significantly impacts accuracy, velocity, and overall handling. Consider your intended use—shorter barrels are more maneuverable in close quarters, while longer barrels offer increased accuracy and velocity.
- Twist Rate: The twist rate dictates how fast the rifling spins the bullet, impacting accuracy and stability. Choose a twist rate appropriate for the bullet weight you plan to use.
- Profile: Different barrel profiles affect weight, balance, and heat dissipation. Lightweight profiles are easier to carry, while heavier profiles provide better accuracy and heat management.
2. Bolt Carrier Group (BCG):
PSA offers various BCGs, from standard options to those with enhanced features like nickel boron coatings for smoother operation and reduced friction. Choose a BCG that is compatible with your chosen barrel and upper receiver.
3. Charging Handle:
Charging handles come in various designs, including standard, ambidextrous, and tactical styles. Select a charging handle that complements your shooting style and preferences.
4. Gas System:
The gas system regulates the amount of gas that cycles the action. Common options include direct impingement and piston-driven systems. Direct impingement is simpler and more common in AR-15s, while piston-driven systems are known for their cleaner operation.
Assembling Your PSA AR-15: A Step-by-Step Guide
This section provides a general overview. Always consult your specific PSA instructions and follow all safety precautions. Improper assembly can lead to malfunction and injury.
- Assemble the Lower Receiver: Install the trigger group, safety selector, buffer tube, and stock.
- Install the Upper Receiver: Mate the upper and lower receivers.
- Install the Barrel: Secure the barrel nut properly.
- Install the Gas Tube: Connect the gas tube to the barrel and upper receiver.
- Install the BCG and Charging Handle: Insert the BCG into the upper receiver and attach the charging handle.
- Test Fire: Once assembled, test fire your rifle at a safe shooting range, following all safety protocols. Ensure proper function and accuracy before regular use.
Essential Tools and Resources for Your PSA AR-15 Build
Building an AR-15 requires specialized tools. Investing in quality tools ensures a safe and precise build. These include:
- Armorer's Wrench: Essential for installing and removing the barrel nut.
- Upper and Lower Receiver Vise Blocks: Provides secure clamping during assembly.
- Punch Set: For driving out pins and other small components.
- Torque Wrench: To ensure proper torque on critical components.
Maintaining Your PSA AR-15
Regular maintenance is crucial for ensuring your AR-15 functions reliably and safely. This includes:
- Cleaning: Clean your rifle after each use, removing fouling and debris.
- Lubrication: Lubricate moving parts with gun oil to reduce friction and wear.
- Inspection: Regularly inspect your rifle for any signs of damage or wear.
This comprehensive guide provides a solid foundation for building your PSA AR-15. Remember, safety is paramount. Always handle firearms responsibly and follow all applicable laws and regulations. Enjoy the process and the satisfaction of building your own custom rifle!
