Let’s Dive into Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug is a seemingly simple, yet crucial component for any AR-15 build aiming for that classic, battle-proven aesthetic and functionality. Its integration of the A2 front sight, gas block, and bayonet lug offers a three-in-one solution for rifle setups demanding reliability and historical accuracy. The Kexuan promises a solid and affordable option for achieving that traditional AR-15 look.
My need for this particular component arose from a desire to build a retro-inspired AR-15. I wanted something that evoked the look and feel of the M16A2 I carried years ago, without sacrificing modern manufacturing standards.
Upon unboxing, the Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug felt surprisingly solid for its price point. The finish was a consistent black, and the overall build quality seemed adequate for typical range use; the steel felt robust enough, though a detailed inspection would be needed later.
Compared to other options, like higher-end brands offering similar integrated gas blocks for upwards of $80-$100, the Kexuan stood out because of its affordability. I chose it for a budget-conscious build.
Initially, I was cautiously optimistic. The low price made me wonder about long-term durability. But the prospect of completing my retro build without breaking the bank was undeniably appealing.
Real-World Testing: Putting Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug to the Test
First Use Experience
My initial testing ground for the Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug was a local outdoor shooting range. I paired it with a standard 16-inch barrel and a mil-spec upper receiver, focusing on zeroing the iron sights and running drills at 50 and 100 yards.
The Kexuan performed adequately during initial zeroing in dry conditions. Adjustments to the front sight post were smooth, and the rifle cycled rounds reliably with a standard carbine buffer and spring.
However, I encountered a slight issue. After about 100 rounds, the front sight post seemed to loosen slightly, requiring minor readjustment.
Extended Use & Reliability
Over several months, the Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug has seen a moderate amount of use, perhaps around 500 rounds total. It’s primarily served on a range-only rifle, seeing limited exposure to harsh conditions beyond typical summer heat.
The finish has held up reasonably well, with minimal signs of wear beyond a few minor scratches from handling. The gas block itself remains firmly attached to the barrel, and I check the screws before each range trip.
Maintenance is straightforward: a quick wipe-down after each range session and occasional lubrication of the front sight post threads. Compared to higher-end components I’ve used in the past, the Kexuan’s performance is acceptable. It fulfills its basic function, but the need for occasional adjustments makes it less confidence-inspiring than premium alternatives.
Breaking Down the Features of Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug
Specifications
- Caliber: .223 Remington/5.56 NATO – The gas block is designed for use with these common AR-15 calibers.
- Gas Block Journal Size-Diameter: .750 in – This is the standard diameter for most AR-15 barrels, ensuring compatibility.
- Gun Make: AR Platform – Specifically designed for AR-15 and similar pattern rifles.
- Color: Black – Provides a consistent aesthetic with most AR-15 components.
- Manufacturer: Kexuan – An aftermarket parts manufacturer focused on providing value-priced components.
These specifications are essential for ensuring proper gas flow and reliable cycling of the AR-15. The .750″ journal size is the most common, offering broad compatibility.
Performance & Functionality
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug effectively directs gas to cycle the action of the AR-15. It also provides a platform for mounting the front sight and a bayonet.
Its primary weakness lies in the minor loosening of the front sight post screws under repeated firing. Its strength is its affordability.
The Kexuan adequately meets expectations for a budget-friendly option. However, it doesn’t exceed them in terms of precision or long-term durability compared to more expensive alternatives.
Design & Ergonomics
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug follows the standard A2 front sight design, providing a familiar and functional sight picture. The build quality is adequate, but the finish could be more durable.
The unit’s weight is comparable to other A2 front sight gas blocks. The learning curve is minimal for anyone familiar with AR-15 iron sights.
Durability & Maintenance
With proper care and occasional tightening of screws, the Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug should provide a reasonable service life. Regular cleaning and lubrication are essential.
Repairing the unit would likely involve replacing the entire gas block, as individual parts are not readily available.
Accessories and Customization Options
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug is designed to work with standard AR-15 accessories. These accessories include:
- A2 front sight tools: These tools are used to adjust the elevation of the front sight post.
- Bayonets: Any bayonet compatible with the AR-15 bayonet lug can be mounted.
- Aftermarket front sight posts: If desired, different styles of front sight posts can be installed.
The Kexuan unit adheres to mil-spec dimensions, making it compatible with a wide range of AR-15 components and accessories from various brands.
Pros and Cons of Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug
Pros
- Affordable price point makes it accessible for budget builds.
- Functional A2 front sight provides a classic AR-15 aesthetic.
- Bayonet lug adds a historical touch and mounting option.
- Easy to install with basic AR-15 armorer’s tools.
- .750″ gas block journal size is compatible with most AR-15 barrels.
Cons
- Front sight post screws may loosen under repeated firing.
- Finish is less durable than higher-end alternatives.
- May require occasional adjustments to maintain zero.
Who Should Buy Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug?
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug is perfect for budget-conscious builders, retro AR enthusiasts, or those seeking a basic, functional front sight and gas block combination. It is also ideal for those building a display rifle that will not see heavy usage.
This product should be skipped by individuals prioritizing top-tier performance, extreme durability, or those requiring a gas block for high-volume shooting or competition use. It’s also not recommended for those unwilling to periodically check and tighten the front sight post.
A must-have accessory would be a high-quality set of Allen wrenches and thread locker to help secure the front sight post screws.
Conclusion on Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug
The Kexuan AR-15 A2 Front Sight Post Gas Block w/Bayonet Lug offers a solid, budget-friendly option for builders looking to complete a retro-inspired AR-15 or simply seeking a functional front sight and gas block. While it may not match the precision or durability of higher-priced alternatives, its affordability makes it a compelling choice for those on a tight budget.
The price of $29.99 is justified for what it offers – a functional A2 front sight, gas block, and bayonet lug in one package. It offers an attractive price point, but be aware of its limitations.
I would recommend it with reservations. It’s a good option for a range toy or display rifle, but not for a rifle intended for serious use. If you’re looking for a budget-friendly way to add that classic A2 aesthetic to your AR-15, give the Kexuan a try – just be sure to check those screws!