BUSHMASTER’S® BOAR™ 20″ 450BM

For Tennessee hunters and shooters who face the tough, fast-moving wild hogs that tear up fields from the Cumberland Plateau to the Mississippi Delta, stopping power isn’t a luxury—it’s a necessity. The Bushmaster Boar 20″ in .450 Bushmaster is built around a cartridge that delivers precisely that, combining a heavy, fast slug with the familiar ergonomics of an AR-style platform. Whether you’re clearing brush on your own property or keeping a reliable defensive carbine at the ready, this model offers a practical, hard-hitting option that fits the terrain and the task.

What This Product Is and Who It’s For

The Bushmaster Boar 20″ is a semi-automatic rifle chambered in .450 Bushmaster, designed for shooters who need a substantial increase in energy over standard 5.56mm or .223 Remington cartridges. It is a dedicated hog-hunting tool, but its capabilities extend to home defense and general-purpose shooting where a larger caliber is preferred. This model is intended for the licensed civilian shooter who values reliability and power in a platform they already know—the AR-15. It is not a specialized competition rifle, but it is a practical choice for hunters who want a single firearm for both the field and the range, and for collectors who appreciate the niche but proven .450 Bushmaster round for its straight-wall legality in certain states.

Key Spec Breakdown

• Caliber: .450 Bushmaster (straight-wall cartridge, ideal for large game and states with straight-wall regulations)
• Capacity: 4-round detachable magazine (standard; aftermarket options may vary)
• Barrel Length: 20 inches, threaded (standard 5/8×24 thread pattern for muzzle devices or suppressors)
• Overall Length: Approximately 38 inches (collapsible stock fully extended)
• Weight: Approximately 8.5 pounds (unloaded, varies slightly with accessories)
• Finish: Hardcoat anodized aluminum upper and lower receiver; matte black finish on barrel
• Stock: Six-position collapsible carbine stock (M4-style)
• Sights: Adjustable rear sight and A2-style front sight post (integrated into gas block)
• Gas System: Direct impingement, carbine-length gas system
• Handguard: Free-float M-Lok compatible aluminum handguard (approximately 15 inches)
• Trigger: Standard mil-spec trigger group
• Muzzle: Threaded barrel with a factory-installed muzzle brake

Feature Deep-Dive

The 20-inch barrel on the Boar is not an arbitrary length. In the .450 Bushmaster, barrel length directly affects velocity and energy retention. A 20-inch barrel allows the cartridge to reach its full potential, pushing a 250-grain bullet to velocities around 2,200 feet per second. This translates to more than 2,600 foot-pounds of energy at the muzzle, which is substantial for taking down hogs, deer, or other medium-to-large game at ranges out to 200 yards. The barrel is also threaded, giving you the option to attach a suppressor or a different muzzle device without needing a gunsmith, which is a practical consideration for Tennessee hunters who may want to reduce noise on private land.

The free-float M-Lok handguard is a significant upgrade over standard plastic handguards. It provides a stable mounting platform for accessories like a bipod, flashlight, or forward grip without affecting barrel harmonics. This means your point of impact remains consistent even when you add weight or accessories. The handguard is also slim and lightweight, which helps keep the overall balance of the rifle manageable despite the heavy barrel profile. For a Tennessee hunter who might be walking through wet bottomland or dense brush, a slim, secure handguard reduces snagging and improves handling.

The .450 Bushmaster cartridge itself is a key feature. It is a straight-wall cartridge, which means it meets the legal requirements for hunting in several states that restrict rifle calibers during certain seasons, including parts of the Midwest and Northeast. While Tennessee does not have a straight-wall requirement for most rifle seasons, the cartridge’s performance on hogs is well-documented. The heavy bullet delivers deep penetration and reliable expansion, making it effective against the thick shields and dense muscle of mature boars. The recoil is noticeable but manageable, especially compared to larger magnum cartridges, and the AR platform’s buffer system helps tame it.

The six-position collapsible stock allows you to adjust the length of pull to fit your body type or the thickness of your hunting coat. This is a practical advantage for a rifle that may be used by multiple family members or in varying weather conditions. The stock also provides a cheek weld that is consistent with standard AR-15 ergonomics, so if you are already familiar with the platform, the transition to the Boar is seamless. The included muzzle brake is effective at reducing felt recoil and muzzle rise, which helps with follow-up shots on moving targets like hogs.

Reliability in the .450 Bushmaster is dependent on proper feeding and extraction, and Bushmaster has addressed this with a dedicated bolt carrier group and magazine. The bolt face is machined to accommodate the larger rim diameter, and the extractor is designed to handle the heavier recoil impulse. The magazine is a single-stack, low-capacity design that ensures reliable feeding without the complexity of a double-stack magazine. While the 4-round capacity may seem limited, it is sufficient for hunting scenarios where ethical shots are typically one or two rounds. For home defense, the limited capacity is a trade-off for the significant terminal performance of the cartridge.

Ideal Use Cases

• Hunting: This is the primary use case. The .450 Bushmaster is a proven hog and deer cartridge, and the 20-inch barrel provides the velocity needed for ethical kills at typical hunting distances. It is also suitable for black bear if you use a bonded bullet.
• Home Defense: The .450 Bushmaster offers substantial stopping power, but it also produces significant recoil and overpenetration risk. It is viable for home defense in rural or suburban settings where walls are spaced farther apart, but it is not recommended for tight urban environments due to the heavy bullet’s penetration through drywall.
• Range Shooting: The rifle is accurate enough for target shooting at 100 to 200 yards. Ammunition costs are higher than 5.56mm, so it is not a plinking rifle, but it is suitable for zeroing and practicing with your hunting load.
• Collecting: As a dedicated .450 Bushmaster AR from a well-known manufacturer, the Boar has a place in a collection focused on practical, hard-hitting carbines or straight-wall cartridges.

Compatibility Notes

Ammunition: The Boar is chambered for .450 Bushmaster only. Do not use .45 ACP, .458 SOCOM, or any other cartridge. Factory-loaded ammunition from Hornady, Federal, Remington, and others is widely available. Reloading is possible with proper dies and components, but always follow published load data.

Holsters: As a rifle, this product does not use a handgun holster. For storage, a scabbard or soft case is appropriate.

Magazines: The rifle ships with one 4-round magazine. Aftermarket magazines from Lancer and others are available in 4- and 5-round capacities. Standard AR-15 magazines will not work in .450 Bushmaster.

Accessories: The M-Lok handguard accepts any M-Lok accessory. The threaded barrel (5/8×24) is compatible with most .45-caliber suppressors and muzzle brakes. The Picatinny rail on the upper receiver accepts standard optics mounts. The stock is compatible with standard AR-15 buffer tubes and buttstocks.

FAQ

1. Can you ship this rifle to a Tennessee address?
Yes. As a licensed FFL retailer, we ship this rifle to any Tennessee FFL dealer you choose. We cannot ship directly to a residential address. You will need to select a receiving FFL during checkout, or we can recommend one near you. Standard shipping fees apply.

2. How does the FFL transfer process work for Tennessee residents?
After you place your order, we will ship the rifle to your chosen FFL dealer. You will need to visit that dealer in person, complete a Form 4473, and pass a NICS background check. The dealer will charge a transfer fee (typically $20–$50, depending on the dealer). Once the check clears, you take the rifle home.

3. What ammunition is compatible with the Bushmaster Boar 20″ .450 Bushmaster?
This rifle is chambered for .450 Bushmaster only. Use factory-loaded ammunition from reputable manufacturers. Do not use reloads unless you are an experienced reloader and have verified the load data. The cartridge uses a .452-inch diameter bullet, typically 250 to 300 grains. Always check the barrel for obstructions before firing.

4. What is the warranty on this product?
Bushmaster Firearms provides a limited lifetime warranty to the original owner against defects in materials and workmanship. This covers the receiver, barrel, and internal components under normal use. The warranty does not cover wear items such as springs, extractors, or finish damage. For warranty service, contact Bushmaster directly or return the rifle to us, and we will facilitate the process.

5. Can I return this rifle if I change my mind?
We accept returns on unfired, unmodified firearms within 30 days of delivery. The rifle must be in its original packaging with all accessories. A 15% restocking fee applies. Firearms that have been fired, modified, or show signs of use cannot be returned. Contact our customer service team for a return authorization number before shipping. Shipping costs for returns are the buyer’s responsibility.

Closing CTA

This Bushmaster Boar 20″ .450 Bushmaster is in stock and available for shipment to your Tennessee FFL dealer. We are a Tennessee-based retailer and ship from within the state, so you can expect fast delivery. If you have questions about choosing a receiving FFL or need help with your order, contact our team. Add the Boar to your cart to secure yours for the coming season.