Let’s Dive into DoubleStar DS4 6 Position Buffer Tube
The DoubleStar DS4 6 Position Buffer Tube is a critical component for any AR-15 build or upgrade, providing the interface between the lower receiver and the buttstock. DoubleStar aims to deliver a reliable and durable buffer tube, offering both commercial and Mil-Spec versions to ensure compatibility with a wide range of AR-15 platforms.
I embarked on this review because I’m constantly tinkering with my AR platform rifles, always looking for ways to enhance performance and reliability. A quality buffer tube is paramount for recoil management and overall rifle stability. When my older build started showing signs of wear around the buffer tube threads, I decided to explore options, and the DoubleStar DS4 caught my attention due to its advertised 7075-T6 aluminum construction and reasonable price point.
Upon unboxing, the initial impression was…underwhelming. The finish appeared somewhat rough, and the overall machining lacked the finesse I’ve come to expect from other buffer tubes in my collection. Comparing it to a BCM Mil-Spec buffer tube and a CMMG commercial spec tube, the DoubleStar felt noticeably lighter, potentially indicating thinner walls, and the anodizing wasn’t as deep or consistent. I was slightly disappointed; the visual inspection didn’t inspire confidence, but I remained optimistic that the performance would redeem it.
Real-World Testing: Putting DoubleStar DS4 6 Position Buffer Tube to the Test
First Use Experience
My initial testing ground for the DoubleStar DS4 6 Position Buffer Tube was an outdoor shooting range, where I put it through its paces on a newly assembled AR-15 pistol chambered in 5.56 NATO. The conditions were dry and sunny, perfect for a comfortable day of shooting.
Unfortunately, the first use revealed an immediate problem. I discovered that the stock would not fully retract, confirming the user feedback about the improper thread runout. After struggling with the stock, and comparing it with my known good tubes, it was clear the DoubleStar DS4 was out of spec.
Extended Use & Reliability
Given the initial issues, extended use was limited. The fact that the stock wouldn’t fully retract made it unusable in any practical or tactical situation.
I attempted to further evaluate its durability, but the functional issues prevented any real assessment. The rough internal finish also raised concerns about potential buffer and spring wear over time. I disassembled the lower, immediately removed the buffer tube, and reinstalled one of my known good buffer tubes. The DoubleStar DS4 disappointed significantly.
Breaking Down the Features of DoubleStar DS4 6 Position Buffer Tube
Specifications
- Manufacturer: DoubleStar
- Material: 7075-T6 Aluminum: This alloy is known for its high strength-to-weight ratio, crucial for AR-15 components subject to recoil and stress.
- Positions: 6: Provides adjustability for different stock positions to accommodate various shooter preferences and body types.
- Type: Available in both Commercial and Mil-Spec: Ensures compatibility with different buttstock designs, though the one I received didn’t meet even commercial specs.
- Finish: Anodized: Offers a protective layer against corrosion and wear, although the finish quality was lacking in my sample.
- Length: 7.19 inches: Standard length for AR-15 buffer tubes, accommodating standard buffer and spring combinations.
- Gun Model: AR-15
- Gun Type: Rifle
- Color: Black
These specifications are standard for AR-15 buffer tubes; however, the execution in terms of manufacturing precision and finish quality significantly impacts the overall performance and user experience. The 7075-T6 aluminum should provide excellent durability, but this is negated by the apparent machining issues.
Performance & Functionality
Unfortunately, the DoubleStar DS4 6 Position Buffer Tube’s performance was subpar due to manufacturing defects. The inability of the stock to fully retract renders it essentially non-functional. It fails to meet the basic expectation of allowing proper stock adjustment.
The strengths of a properly manufactured buffer tube include providing a stable platform for the buttstock and facilitating smooth cycling of the AR-15 action. However, the sample I received had significant weaknesses, primarily the incorrect thread runout.
Design & Ergonomics
The design of the DoubleStar DS4 6 Position Buffer Tube follows the standard AR-15 buffer tube profile. Ergonomically, a properly functioning buffer tube should allow comfortable and repeatable stock adjustments. However, the rough finish and functional issues detract from the overall user experience.
The weight, while light, didn’t inspire confidence, suggesting potentially thinner walls that might compromise long-term durability. Build quality is a major concern given the visible defects.
Durability & Maintenance
The 7075-T6 aluminum should theoretically provide good durability. The rough internal finish, however, raises concerns about accelerated wear on the buffer and spring. Long-term reliability is questionable, based on the initial issues.
Maintenance should be minimal, typically involving occasional cleaning and lubrication. However, the rough finish might make cleaning more difficult.
Accessories and Customization Options
The DoubleStar DS4 6 Position Buffer Tube is designed to be compatible with any AR-15 buttstock designed for either commercial or Mil-Spec buffer tubes (depending on the version purchased). It directly interfaces with the lower receiver and the buttstock, making it a central component for customization. It should accept standard AR-15 buffer springs and buffers.
Pros and Cons of DoubleStar DS4 6 Position Buffer Tube
Pros
- Potentially lightweight due to 7075-T6 Aluminum construction.
- Standard 6-position adjustability.
- Compatible with a wide range of AR-15 buttstocks (in theory).
Cons
- Manufacturing defects prevent proper stock retraction.
- Poor finish quality, both internally and externally.
- Questionable long-term durability due to rough machining.
Who Should Buy DoubleStar DS4 6 Position Buffer Tube?
Theoretically, this buffer tube could be suitable for budget-conscious builders looking for a basic buffer tube. However, only if quality control improves significantly.
Avoid this product if you prioritize reliability, smooth operation, and a high-quality finish. This product, as it stands, needs to be thoroughly inspected and verified before being considered for any build.
Conclusion on DoubleStar DS4 6 Position Buffer Tube
The DoubleStar DS4 6 Position Buffer Tube promises a lightweight and adjustable buffer tube solution for AR-15 platforms. However, the manufacturing defects and poor finish quality in the sample I received severely undermine its value proposition. At $26.55, the price might seem attractive, but the functional issues make it a false economy.
I cannot recommend the DoubleStar DS4 in its current state. Invest in a buffer tube from a more reputable manufacturer to ensure reliable and consistent performance. Your AR-15 deserves better.