Sons of Liberty Gun Works M4-76 5.56 Barreled AR-15 Upper Receiver - 16"
The Sons of Liberty Gun Works M4-76 5.56 Barreled AR-15 Upper Receiver is highly enhanced upper for AR-15 enthusiasts seeking a reliable, multi-purpose rifle. This upper receiver features a 16" barrel precision-machined from robust 4150 chrome moly vanadium steel, finished with QPQ Nitride for exceptional durability. The 15-inch M476 free-float M-LOK handguard features additional 45-degree M-LOK attachment points for additional versatility.
This upper receiver includes the forward assist and dust cover pre-assembled but does not come with a BCG or charging handle. To further enhance functionality, a dry film lube is applied to the inside of the receiver, reducing friction with the bolt carrier.
- Enhanced AR-15 upper
- 16" barrel with QPQ Nitride finish
- M476 free float handguard with M-LOK slots
- Durable 7075-T6 aluminum upper receiver
- Wedgelock barrel nut for longevity
- Includes forward assist and dust cover
- Dry film lube for smooth function
Sons of Liberty Gun Works, a leading custom rifle manufacturer in the United States, specializes in the AR-15 platform, ensuring top-notch craftsmanship and performance. Build your duty-ready rifle with confidence starting this exceptional upper receiver.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
Ratings & Reviews
Worth the money
by Daniel -
Without a doubt one of the best uppers I own. I caught it on a sale for a new duty upper and I’m absolutely pleased with it. Great accuracy and reliability.