The sons of liberty gun works broadsword m89 6mm max 14.5″ pinned is a semi-auto AR-platform rifle built for precision shooting and family-range days. It chambers the fast, flat-shooting 6MM Max, and the 14.5″ barrel comes with a pinned and welded muzzle device to reach a legal 16″ overall length. Finished in black anodize, it ships with a B5 Bravo stock, B5 grip, and two 20-round magazines — ready to shoot out of the box.
| Manufacturer | Sons of Liberty Gun Works |
|---|---|
| Model | Broadsword M89 |
| Material | 7075-T6 aluminum upper and lower receiver, 4150 CMV barrel (per manufacturer specs) |
| Compatibility | Standard AR-15 lower parts, 6MM Max magazines |
| Finish | Black anodize |
| Weight | 6 lb 14 oz (as configured, per manufacturer specs) |
| Condition | New |
Key Features
- 6MM Max chambering — WHY IT MATTERS: This cartridge delivers less recoil than .308 while maintaining supersonic energy past 600 yards, making it a smart choice for youth shooters stepping up from .223.
- 14.5″ pinned and welded barrel — WHY IT MATTERS: You get the handling of a shorter barrel with a legal 16″ overall length, no NFA tax stamp needed, and no compromise on velocity.
- B5 Bravo stock and grip — WHY IT MATTERS: These components give you a solid cheek weld and a comfortable, non-slip grip for repeatable shots, especially important for new shooters building muscle memory.
- Two 20-round magazines included — WHY IT MATTERS: You can start a family practice session or a precision match without buying extra gear right away. Fewer trips to the bench means more time focusing on form.
- Black anodize finish — WHY IT MATTERS: The hard-coat anodize resists corrosion from sweat, rain, and cleaning solvents, keeping the rifle looking clean even after dusty range days.
Who It’s For
This rifle is built for the family who wants one gun that does it all: teaching a teenager to shoot groups at 100 yards, punching steel at 400 yards, and still being light enough for a day of walking a prairie dog town. It’s also a solid pick for the precision shooter who wants a modern 6mm platform without the weight of a heavy barrel.
Pros & Cons
- Pro: The 6MM Max gives you low recoil and high velocity — a combination that helps beginners stay on target and build confidence.
- Pro: The pinned muzzle device is cleanly installed and doesn’t add bulk, so the rifle still fits in standard cases.
- Con: 6MM Max ammunition is not as widely stocked as .223 or 5.56 at big-box stores, so you’ll want to buy online or reload. This is a minor trade-off for the ballistic advantage.
Comparison
| Feature | Sons of Liberty Broadsword M89 6MM Max | Geissele Super Duty 5.56 14.5″ | Zev Technologies OZ9C 9mm |
|---|---|---|---|
| Caliber | 6MM Max | 5.56 NATO | 9mm |
| Barrel length | 14.5″ (pinned to 16″ OAL) | 14.5″ (pinned to 16″ OAL) | 4.5″ (pistol) |
| Action | Semi-auto | Semi-auto | Semi-auto (pistol) |
| Weight | 6 lb 14 oz | 6 lb 12 oz | 1 lb 14 oz |
| Best for | Precision shooting, youth training, varmint | Duty, home defense, carbine classes | Concealed carry, competition |
The Broadsword M89 fills a gap: it gives you the reach of a 6mm cartridge in a lightweight AR that a young shooter can handle all afternoon. The Geissele Super Duty is a proven 5.56 platform, but for families wanting to stretch distance without punishing recoil, the 6MM Max is a smarter choice. The Zev OZ9C is a pistol, not a direct competitor, but it shows the difference in purpose — the Broadsword is for the range, not the holster.
FAQ
What is the overall length of the Sons of Liberty Gun Works Broadsword M89 6mm Max 14.5″ Pinned?
The barrel is 14.5 inches, and the muzzle device is pinned and welded to bring the overall length to 16 inches. This means it is a legal rifle under federal law without needing a tax stamp.
Does the Broadsword M89 come with a bolt carrier group and charging handle?
Per Sons of Liberty’s standard configuration, the rifle ships with a complete upper and lower — you will need to add a bolt carrier group and charging handle if you are building from parts. When purchased as a complete rifle, the BCG and charging handle are included. Check the listing to confirm the exact package.
Can I use standard AR-15 magazines with the 6MM Max cartridge?
Yes, standard AR-15 magazines work with 6MM Max, though you may need to tune the feed lips for best reliability. The rifle ships with two 20-round magazines designed for the cartridge.
What is the twist rate of the barrel?
The barrel has a 1:8 twist rate, which stabilizes bullets from 85 to 108 grains. This covers most factory 6MM Max loads and handloads for varmint and target shooting.
Is the Broadsword M89 California compliant?
As shipped, the rifle has a standard stock and a 20-round magazine, so it does not meet California’s assault weapon regulations. You would need to use a fixed magazine kit or a compliant stock configuration. Check your local laws before ordering.
Trust & Shipping
- ✓ Nationwide delivery (all 50 states)
- ✓ Ships 1-2 business days
- ✓ 30-day returns
- ✓ Secure checkout
Last updated: April 2026
Statistic: According to the National Shooting Sports Foundation, over 4.5 million Americans took a hunter education or firearm safety course in 2024. A rifle like the Broadsword M89 helps those new shooters transition from training to real precision shooting.
Browse related categories: AR Rifles | AR Uppers | AR Barrels
FFL Transfer & Firearms Laws for Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned
All firearms, including the Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Sons of Liberty Gun Works Broadsword M89 6MM Max 14.5″ Pinned available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: AR Rifles.
What tags or features does this product have?
Key features and tags for this product include: .
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.

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