The AR-15 platform's popularity stems from its modularity and customizability. However, this flexibility means the reliability of your AC556 (or any AR-15 variant) heavily depends on the quality of its components. A well-chosen parts kit is the foundation of a dependable and accurate rifle. This guide will delve into the critical aspects of selecting the right parts kit for your AC556 build, focusing on what truly makes the difference between a reliable firearm and one prone to malfunctions.
What is an AC556 Parts Kit?
An AC556 parts kit typically comprises all the essential components needed to assemble an AR-15 style rifle, excluding the lower receiver. This is because the lower receiver is the serialized part regulated by the ATF, and you'll need to purchase this separately, usually as a stripped lower. The kit itself contains the upper receiver, bolt carrier group (BCG), charging handle, barrel, handguard, gas system components, and various smaller parts. The quality and manufacturer of these components drastically affect the overall performance and reliability of your firearm.
Choosing the Right AC556 Parts Kit: Key Considerations
Selecting the optimal parts kit requires careful consideration of several factors:
1. Barrel Quality:
The barrel is arguably the most crucial part of your AC556. A high-quality barrel ensures accuracy, longevity, and consistent performance. Look for barrels made from chrome-moly vanadium steel (CMV) or stainless steel, known for their durability and resistance to wear. Consider the barrel's length and twist rate, matching them to the ammunition you plan to use. A shorter barrel will be lighter but might sacrifice some velocity and accuracy, while a longer barrel provides greater accuracy potential but adds weight.
2. Bolt Carrier Group (BCG):
The BCG is the heart of the AR-15's operating system. A properly functioning BCG ensures reliable cycling and extraction. Invest in a BCG from a reputable manufacturer known for precision machining and high-quality materials. Look for features like a properly staked gas key and a chrome-lined bore for increased durability and resistance to corrosion. Some kits offer nickel boron-coated BCGs, which offer smoother operation and reduced friction.
3. Upper and Lower Receiver Compatibility:
Ensure the upper receiver in your chosen kit is compatible with your lower receiver. While most AR-15 parts are standardized, slight variations can exist. Double-check the specifications before purchasing to prevent incompatibility issues.
4. Gas System Components:
The gas system regulates the gas pressure from the barrel to cycle the action. A properly functioning gas system is vital for reliable operation. Look for well-made gas tubes and gas blocks from reputable manufacturers. Pay close attention to proper installation during assembly to ensure flawless functioning.
What are the common problems with AC556 parts kits?
This question touches on a critical aspect often overlooked. Many budget-friendly kits might cut corners on materials or manufacturing processes, leading to common problems like:
- Malfunctions: Poorly machined parts can lead to jams, failures to feed or eject, and other malfunctions.
- Inaccurate Shooting: Lower-quality barrels often exhibit poor accuracy and inconsistent groupings.
- Reduced Lifespan: Inferior materials can wear down quickly, reducing the overall lifespan of your rifle.
- Safety Concerns: Failure of critical components can lead to serious safety issues.
Choosing reputable manufacturers and investing in higher-quality components mitigate these risks significantly.
How do I choose a reliable AC556 parts kit?
The best way to choose a reliable AC556 parts kit is to thoroughly research manufacturers and read reviews from experienced AR-15 builders. Look for brands with a reputation for quality and customer satisfaction. Don't hesitate to invest a bit more in a higher-quality kit; it will pay off in the long run with improved reliability and accuracy.
Are all AC556 parts kits created equal?
Absolutely not! The quality of parts kits varies dramatically depending on the manufacturer and materials used. Just as with any other firearm component, quality directly impacts performance and reliability. A cheap parts kit might seem like a bargain, but it can cost you significantly more in the long run through malfunctions, repairs, and potential safety issues.
Where can I find reputable AC556 parts kit manufacturers?
Many reputable manufacturers produce high-quality AR-15 parts kits. However, due to legal restrictions, I can't directly link to specific retailers or manufacturers here. A simple online search for “high-quality AR-15 parts kits” will yield numerous reputable vendors. Remember to always research a manufacturer's reputation before making a purchase.
By carefully selecting your AC556 parts kit and prioritizing quality components, you'll lay the groundwork for a reliable and accurate firearm that will serve you well for years to come. Remember, investing in a quality parts kit is an investment in the longevity and safety of your firearm.
