Building your own AR-15 is a rewarding experience, allowing for customization and a deeper understanding of your firearm. Choosing the right stripped upper receiver is crucial, as it forms the foundation of your build. This guide will explore the key factors to consider when selecting a stripped upper receiver and highlight some of the top contenders on the market. We'll delve into materials, manufacturing processes, and features to help you make an informed decision.
Understanding Stripped Upper Receivers
A stripped upper receiver is essentially the bare bones of the upper assembly. It lacks the forward assist, ejection port cover, charging handle, and barrel nut. This allows for maximum customization, as you can choose each component to perfectly match your needs and preferences. The quality of your stripped upper receiver significantly impacts the overall performance, reliability, and longevity of your AR-15.
Key Factors to Consider When Choosing a Stripped Upper Receiver
Several factors influence the quality and suitability of a stripped upper receiver:
1. Material:
- 7075-T6 Aluminum: This is the industry standard. Its strength and durability make it ideal for AR-15 upper receivers. Look for receivers forged from this alloy for superior strength and longevity.
- Forged vs. Billet: Forged receivers are generally preferred for their strength and cost-effectiveness. Billet receivers are machined from a solid block of aluminum, offering high precision but often at a higher price point.
2. Manufacturing Process:
- Forging: This process creates a stronger, more durable receiver by shaping the aluminum under high pressure.
- CNC Machining (Billet): CNC machining offers extreme precision and allows for intricate designs, but it's generally more expensive.
3. Finish:
- Anodizing: This process provides a durable, corrosion-resistant finish. Type III hard-coat anodizing is commonly used and offers superior protection.
4. Markings:
- Roll Marks: These markings are typically rolled into the receiver, making them more durable than stamped markings.
5. Features:
- M4 Feed Ramps: These ramps help ensure reliable feeding of ammunition. Almost all modern receivers include these.
- T-Marks: These are small markings that aid in alignment during assembly.
- Overall Fit and Finish: Look for a receiver with smooth surfaces, consistent markings, and no burrs or imperfections.
Top Stripped Upper Receiver Brands (Examples, not endorsements):
While specific recommendations are avoided to maintain objectivity and prevent the appearance of endorsements, researching reputable manufacturers known for their high-quality AR-15 parts is crucial. Look for brands with a strong reputation for quality control and customer service.
Assembling Your AR-15 Upper Receiver
Once you've selected your stripped upper receiver, assembling the rest of the upper is straightforward, but requires careful attention to detail. Refer to detailed assembly instructions and videos from reputable sources for guidance.
Conclusion
Selecting the right stripped upper receiver is a crucial step in building a reliable and high-performing AR-15. By considering the factors discussed above and researching reputable manufacturers, you can ensure a solid foundation for your custom build. Remember to always prioritize safety and follow all relevant firearm laws and regulations. This guide offers valuable information, but professional guidance should always be considered for firearm assembly and handling.
