Alexander Arms Millennium Muzzle Brake Kit – .50 Beowulf®
Black Steel • 49/64–20 RH Threads • 4.00" Overall Length • 3.50" Diameter • Complete Kit
Model: MBMMB64KIT • UPC: 819511022179
Tame big-bore recoil and keep sights on target with the Alexander Arms Millennium Muzzle Brake Kit. Purpose-built for .50 Beowulf® rifles and uppers, this premium brake uses a large, high-efficiency baffle system to slash felt recoil, minimize muzzle rise, and improve shot-to-shot control—so you can stay on the glass, run faster follow-ups, and spot your impacts. Machined from black-finished steel and threaded 49/64–20 RH, the Millennium Brake installs on compatible .50 Beowulf® barrels and arrives as a complete kit for a streamlined upgrade.
If you run a .50 Beowulf® for hunting, range work, or ranch defense, the Millennium is the proven way to get big performance out of a big bore.
Why Choose the Millennium Muzzle Brake
Engineered for .50 Beowulf®
Optimized internal geometry and generous expansion chambers help tame the thump of heavy 0.50-cal loads while keeping the muzzle flat for quicker follow-up shots.
High-Efficiency Gas Redirection
Multi-port baffles direct gas laterally to reduce rearward impulse and combat muzzle climb—ideal for spotting hits on steel and in the field.
Durable Black Steel Construction
Robust, black-finished steel resists heat and abuse from high-energy loads, maintaining crisp performance over long range sessions.
Correct Threading for Big Bore
Factory 49/64–20 RH threads match .50 Beowulf® standards for a proper, secure fit and easy timing with shims/washer (per kit contents).
Complete Kit Convenience
Ships as a kit to simplify installation and alignment—no guesswork on parts sourcing.
Note: Always verify your barrel’s thread pitch and included hardware before installation. Professional installation is recommended for precise timing and alignment.
Key Specifications
Caliber/Application: .50 Beowulf® (AR-15 platform)
Material: Steel, black finish
Thread Pitch: 49/64–20 RH (right-hand)
Overall Length (OAL): 4.00 inches
Diameter: 3.50 inches
Model: MBMMB64KIT
UPC: 819511022179
Included: Millennium muzzle brake and kit components for installation (verify exact contents with your retailer)
Performance Benefits You’ll Notice
Flatter, Faster Follow-Ups
By cutting felt recoil and curbing muzzle rise, the Millennium helps you keep your reticle stable for quicker second shots and improved practical accuracy.
Better Hit Calling
Less bounce means you’re more likely to see your own impacts, speeding corrections on steel or live-fire zeroing.
More Comfortable Range Sessions
Reduced punishment at the shoulder translates to longer, more productive practice, especially with heavy hunting loads.
Ideal Use Cases
Hog & Large-Game Hunting (where legal): Stay on target for fast follow-ups when shot windows are tight.
Range / Training: Improve control and confidence with big-bore drills.
Ranch & Property Defense: Manage recoil for rapid, accurate strings on multiple targets.
Installation & Setup (General Guidance)
Confirm Thread Pitch: Ensure your barrel is 49/64–20 RH.
Prep the Muzzle: Clean threads; verify shoulder is square.
Time the Brake: Use supplied shims/washer (per kit) to orient ports correctly; follow torque recommendations.
Verify Alignment: Insert a bore rod or visual aid to confirm coaxial alignment prior to live fire.
Function Test: Fire a single round to confirm stability and orientation, then re-check torque after initial range use.
Safety: Muzzle brakes can increase side blast and noise. Always use proper ear/eye protection and be mindful of shooters next to you.
Care & Maintenance
Routine Cleaning: Carbon accumulates quickly with big bores. Soak and brush ports as needed.
Thread Care: Apply a light anti-seize to threads if you remove the brake frequently.
Torque Check: Re-confirm timing and torque after the first range session and periodically thereafter.
Frequently Asked Questions
Q: Will this fit any .50 Beowulf® barrel?
A: It’s designed for barrels threaded 49/64–20 RH. Verify your barrel spec before purchase.
Q: Do I need a gunsmith?
A: Skilled DIY installers can complete the job with proper tools, but professional installation ensures correct timing and bore alignment.
Q: How much recoil reduction can I expect?
A: Perceived reduction varies by load, rifle weight, and shooter. Users typically report significantly less muzzle rise and a noticeably softer impulse.
Q: Is it suppressor compatible?
A: This is a muzzle brake, not a suppressor mount. Confirm any third-party device compatibility with its manufacturer.
Q: What comes in the kit?
A: The kit includes the Millennium brake and installation components; verify exact contents (crush washer/shims, etc.) with your retailer.
SEO Highlights (Quick Scan)
Alexander Arms Millennium Muzzle Brake Kit for .50 Beowulf®
49/64–20 RH threaded, black steel, 4.00" OAL, 3.50" diameter
Reduces recoil and muzzle rise; improves follow-up speed and hit calling
Model MBMMB64KIT, UPC 819511022179 – complete installation kit, big-bore optimized
The Bottom Line
The Alexander Arms Millennium Muzzle Brake Kit (MBMMB64KIT) is the smart upgrade for .50 Beowulf® shooters who want real recoil control, flatter tracking, and more productive range time. Built from black steel, threaded 49/64–20 RH, and delivered as a complete kit, it brings serious performance to one of the most capable big-bore AR platforms out there.
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