Sons of Liberty M4-L89 Upper 14.5" 5.56 P/W
Complete upper receiver group with 14.5" barrel, pinned and welded HUXWRX muzzle device, and 13.75" L89 rail. Matte black finish fits standard AR-15 platforms. BCG and charging handle sold separately.
Fits: AR-15
Sons of Liberty M4-L89 Upper Receiver Group
This is a purpose-built upper receiver assembly designed for shooters who demand quality and precision. The M4-L89 represents the kind of thoughtful engineering that separates serious firearms from casual offerings.
Key Features
- 14.5" Barrel with pinned and welded HUXWRX muzzle device (achieves 16" overall length)
- Forged Upper Receiver for durability and reliability
- Liberty Fighting Barrel engineered for accuracy and longevity
- 13.75" L89 Rail System with 7-sided design for ergonomic mounting options
- 5.56 NATO chambering for versatility and ammunition availability
- Matte Black Finish for a professional appearance
What You Need to Know
This upper receiver group does not include a bolt carrier group or charging handle—you'll need to source those separately. The pinned and welded muzzle device configuration is permanent, making this assembly compliant with regulations requiring 16" overall length.
The L89 rail system provides ample real estate for optics, lights, and other accessories. Whether you're building a duty rifle, competition platform, or home defense system, this upper delivers the kind of performance that comes from attention to detail and quality manufacturing.
Fits standard AR-15 lower receivers.
Features
- 14.5 5.56 nato barrel"
- 13.75 l89 handguard"
- huxwrx flash hider
- 7-sided m-lok slots
- integral qd's at barrel nut on both sides
- drivelock barrel nut system
