Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle Review

Out of the Box: Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle

My search for a dedicated slug barrel for my trusty Mossberg 500 pump-action had become a bit of an obsession. While the factory barrel served admirably for birdshot and buckshot, I wanted to maximize its potential for whitetail hunting in the dense woods of the Northeast. This led me to the Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel, a piece specifically designed to bring precision to sabot slugs. I considered a few other aftermarket options, but the reputation of Mossberg and the integrated adjustable sights sealed the deal for me.

The initial impression upon unwrapping this component was one of solid engineering. The blued finish is a classic matte, presenting a non-reflective surface that’s ideal for field use. The heft of the 24-inch barrel felt substantial, promising a stable shooting platform. It wasn’t a dramatic unveiling, but rather a quiet confirmation that I had acquired a purpose-built tool.

There was a definite sense of satisfaction mixed with anticipation, the kind you get when you know a crucial piece of equipment is finally in hand. This replacement part felt like an upgrade, a promise of improved accuracy and a more versatile firearm. I was eager to get it out of the shop and onto the range.

Real-World Testing: Putting Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle to the Test

First Use Experience

My initial testing took place at my local outdoor shooting range, a familiar haunt on crisp autumn mornings. I mounted the Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel onto my existing Mossberg 500 receiver, a process that was as straightforward as any barrel swap on this platform. I loaded it with several brands of 20-gauge sabot slugs, aiming for a variety of manufacturers and bullet weights to see how it performed. The adjustable rifle sights were easy enough to dial in for initial zeroing.

The performance was immediately noticeable. Groups tightened considerably compared to my previous setup, especially at the 50-yard mark. Even with the slightly longer barrel, handling felt balanced, and recoil was manageable, characteristic of a 20-gauge shotgun. No major issues or surprises presented themselves; it simply performed as a rifled slug barrel should.

Extended Use & Reliability

After several weeks of intermittent use, including a successful deer hunt, the Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel has proven to be a reliable performer. It has endured a couple of damp mornings and the general dust of the range without any degradation in accuracy or function. The blued finish has held up well, showing only minor scuffs from careful handling, not from any abuse.

Maintenance is as simple as cleaning any shotgun barrel; a good bore snake and some solvent keep it in top condition. Compared to the generic smoothbore barrel I previously used for slugs, this dedicated rifled barrel offers a significant upgrade in accuracy and consistency. It clearly outperforms budget-oriented options for any serious slug shooting.

Breaking Down the Features of Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle

Specifications

The Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel is a key component for any 20-gauge Mossberg 500 owner looking to specialize in slug shooting. It boasts a 24″ length, providing a good balance of velocity potential and maneuverability in wooded environments. The fully-rifled bore is the critical feature here, designed to impart spin on slugs for significantly improved accuracy.

It comes equipped with adjustable rifle sights, offering a more precise aiming solution than traditional bead sights. This specification is crucial for sighted slug accuracy, allowing for fine-tuning to your chosen ammunition. The barrel features a matte blued finish, which is both aesthetically pleasing and practical for reducing glare in the field.

This barrel is specifically designed as a slug barrel, meaning it’s optimized for the unique ballistics of slugs rather than birdshot or buckshot. The 20 Gauge chambering makes it compatible with a wide range of 20-gauge ammunition. The absence of a specific choke thread indicates its fixed design for optimal slug performance.

Performance & Functionality

The primary job of this barrel is to make slugs fly accurately, and it excels at this task. I experienced consistent groupings well within the vital zone of a deer at 75 yards, a feat that was nearly impossible with a standard smoothbore. The fully-rifled bore is undoubtedly the star of the show, imparting a stable flight path to the projectile.

Its main strength is its dedicated design for slug accuracy, significantly outperforming any multi-purpose barrel. A potential weakness, though minor, is that its fixed design means you cannot adapt it for birdshot without swapping barrels, but this is inherent to its purpose. It absolutely meets and exceeds expectations for a dedicated slug barrel.

Design & Ergonomics

The build quality of the Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel is what you’d expect from a reputable manufacturer like Mossberg. The matte blued finish feels durable and resists fingerprints and minor abrasions effectively. The barrel itself feels robust and well-machined, fitting snugly onto the receiver.

Ergonomically, the 24-inch length provides a good handling characteristic. It’s not overly long or unwieldy, making it suitable for maneuvering through dense underbrush. The integrated adjustable rifle sights are a practical design element, offering positive windage and elevation adjustments without needing additional scope mounts for many hunters.

Durability & Maintenance

This barrel is built for the long haul under typical hunting and shooting conditions. I expect it to last for many seasons of use without showing significant wear, given its solid construction and the relatively mild impact of slug projectiles compared to high-volume birdshot. The blued finish should offer good protection against rust, provided basic care is maintained.

Maintenance is straightforward: regular cleaning after shooting is all that’s required. There are no complex moving parts or delicate mechanisms to worry about. Potential concerns are minimal, perhaps limited to being mindful of dropping it on hard surfaces, though its robust construction should handle minor impacts.

Accessories and Customization Options

The primary “accessory” with this barrel is its integrated adjustable rifle sights. These are designed for precise aiming and require no additional purchases for sighted slug shooting. While the barrel itself isn’t designed for interchangeable chokes, meaning no external choke tubes can be used, this is a deliberate design choice for slug optimization.

For those who prefer magnified optics, many users of this barrel will opt to install a scope mount or a red dot sight directly onto their Mossberg 500 receiver, which is a common and effective customization for slug guns. This allows for further precision and easier aiming in various light conditions.

Pros and Cons of Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle

Who Should Buy Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle?

This barrel is an excellent choice for any hunter who primarily uses their 20-gauge Mossberg 500 for deer or other medium-sized game where slugs are the projectile of choice. It’s ideal for shooters in states or regions that require shotguns for firearm hunting and who want to maximize the accuracy of their 20-gauge platform. If you’re looking for a dedicated slug barrel that offers a noticeable upgrade over a standard smoothbore without breaking the bank, this is it.

Individuals who frequently switch between slugs, birdshot, and buckshot might be better served by keeping their original smoothbore barrel. Those seeking extreme long-range slug accuracy might consider a fully scoped setup on a dedicated slug gun, but for general purpose slug hunting, this barrel is superb. A must-have complementary item for serious slug hunters would be a quality box of 20-gauge sabot slugs and a reliable ammunition manufacturer known for accuracy.

Conclusion on Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle

The Mossberg 90064 500 20 Gauge 24″ Blued Adjustable Rifle barrel is a finely tuned component that delivers on its promise of enhanced accuracy for slug shooting. Its robust construction, practical features like the adjustable sights, and especially its rifled bore make it a significant upgrade for any Mossberg 500 owner focused on projectile hunting. The $198.49 price point represents excellent value for the substantial improvement in performance it offers over a standard smoothbore.

I would wholeheartedly recommend this barrel to any 20-gauge Mossberg 500 owner looking to venture into slug hunting with confidence. It transforms a versatile scattergun into a surprisingly capable and accurate deer rifle. If your goal is to make more consistent and ethical shots on game with slugs, this barrel is a smart and effective investment.