SOLGW - M4-76 5.56 Nato Upper Receiver 13.7" AR-15 Platform

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  • OLGW - M4-76 5.56 Nato Upper Receiver R
  • OLGW - M4-76 5.56 Nato Upper Receiver L
  • OLGW - M4-76 5.56 Nato Upper Receiver Muzzle
MSRP: $1,000.00
— You save $50.00
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SOLGW M4-76 13.7" 5.56 Nato Upper Receiver

Uncompromising Quality and Performance for Duty

The SOLGW M4-76 is the perfect entry level AR-15 barreled upper receiver package, designed with the features you need for a reliable, versatile carbine built for duty. With its 13.7” barrel machined from 4150 chrome moly vanadium steel and QPQ Nitride finish, this model is built for endurance and precision. Its mid-length gas system ensures reliable function under any conditions with minimal recoil, while the M76 free float handguard with M-LOK slots offers full customization potential. Choose the Sons of Liberty Gun Works M4-76 and equip yourself with a firearm designed for duty.

Key Features

  • 13.7” 5.56 NATO barrel for optimal accuracy and power
  • 4150 chrome moly vanadium steel construction for unmatched durability
  • QPQ Nitride finish for enhanced resistance to wear and corrosion
  • 1/7 twist rate, ideal for heavy 62 grain 5.56 NATO surplus ammunition
  • Mid-length gas system for reliable function and reduced recoil
  • M76 M-LOK free float handguard for full customization potential
  • 1/2x28 with NOX Muzzle for superior muzzle control and recoil reduction
  • 7075-T6 aluminum Cerra forged receiver for superior strength and precision
  • Type III Class 2 hardcoat anodized black finish for additional protection and a sleek look


Barrel Coating: Salt Bath Nitride
Barrel Contour: Government
Barrel Length: 13.7"
Barrel Material: 41V50 Chrome Moly Vanadium Steel
Caliber: 5.56 NATO
Gas System Length: Mid-Length
Gas System Type: Direct Impingement
Handguard: 13" M-LOK Rail
Muzzle Device: NOX
Thread Pattern: 1/2 X 28
Twist Rate: 1:7
Weight: 3 lbs 4.9 oz
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