Building your own AR-10 can be a rewarding experience, offering customization and a deep understanding of your firearm. A complete upper build kit streamlines this process, providing all the necessary components for a quick and efficient assembly. This guide dives into what to look for in a quality AR-10 complete upper build kit, key considerations for choosing the right one, and factors to keep in mind throughout the process.
Understanding AR-10 Complete Upper Build Kits
An AR-10 complete upper build kit typically includes all the parts necessary to assemble the upper receiver of an AR-10 rifle. This eliminates the need to source individual components, saving time and potentially money. These kits usually contain:
- Upper Receiver: The core component, often made from forged aluminum for durability. Look for a well-finished receiver with proper tolerances.
- Bolt Carrier Group (BCG): A crucial part responsible for cycling the action. Choose a BCG from a reputable manufacturer known for quality and reliability. Consider materials like Carpenter 158 steel for enhanced durability.
- Barrel: The heart of the firearm, dictating accuracy and performance. Barrel length, twist rate, and profile are all important factors to consider, depending on your intended use. Common barrel lengths range from 16" to 24".
- Gas System: This includes the gas tube and associated components that regulate gas pressure. Direct impingement and short-stroke piston systems are the two primary options.
- Handguard/Rail System: Provides a mounting platform for accessories such as optics, lights, and vertical grips. Material (aluminum or polymer), length, and rail system (M-LOK or KeyMod) are key choices.
- Charging Handle: Used to manually cycle the bolt carrier group. Ambidextrous charging handles offer increased versatility.
- Other Components: This might include a forward assist, ejection port cover, and any other necessary hardware.
Key Factors to Consider When Choosing a Kit
Selecting the right AR-10 complete upper build kit requires careful consideration of several factors:
1. Caliber:
AR-10s are available in various calibers, most commonly .308 Winchester (7.62x51mm NATO) and 6.5 Creedmoor. The caliber will determine the barrel and BCG you need.
2. Barrel Length and Profile:
Barrel length influences accuracy, velocity, and recoil. Longer barrels generally offer higher velocity and better accuracy, while shorter barrels are lighter and more maneuverable. The barrel profile (e.g., government profile, mid-length profile) also impacts balance and weight.
3. Gas System:
Direct impingement systems are simpler and generally less expensive, but can lead to more gas in the receiver. Short-stroke piston systems offer cleaner operation but are typically more expensive. Your choice will depend on your priorities.
4. Handguard:
The handguard's length and rail system (M-LOK or KeyMod) will influence the accessories you can mount and overall weight. Consider your planned accessories when making your selection.
5. Budget:
AR-10 build kits range widely in price. Set a budget before you begin your search to avoid exceeding your financial limits.
6. Manufacturer Reputation:
Choose a kit from a reputable manufacturer with a proven track record of producing quality firearms components. Research different brands and read reviews to assess their reliability and customer service.
Building Your AR-10 Upper: A Step-by-Step Overview
While a complete upper kit simplifies the process, assembling it still requires attention to detail and some mechanical aptitude. Consult detailed instructions and videos specific to your chosen kit for the most accurate guidance. Remember always to prioritize safety.
Conclusion
An AR-10 complete upper build kit offers a convenient path to building a powerful and customizable rifle. By carefully considering the factors outlined above and selecting a kit from a reputable manufacturer, you can assemble a reliable and accurate firearm tailored to your needs. Remember that proper research and attention to detail are key to a successful build.
