Sons of Liberty Gun Works M4-76 11.5″ Upper Receiver Group – No BCG, CH


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(2 customer reviews)

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At Sons of Liberty Gun Works we believe in Quality Mil-Spec or better parts. We believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. We believe a quality Bolt Carrier Group and a quality, accurate and long lasting barrel are the heart of a Combat Grade weapon. We believe in properly tuned weapons using the correct gas system length and quality buffer system components such as our Liberty Fighting Trigger and Sprinco Tactical Buffer Springs. We believe in our products and we back them up with a Lifetime Warranty. Our weapons our meant to be used hard and go in harm’s way, they won’t let you down.


  • Upper receiver: Milspec 7075-T6 forged, hard coat anodizing exterior with dry-film lubricated interior, T-mark engraved
  • Barrel: 11.5″ length, 4150 Chrome Moly Vanadium steel, 1:7 twist, QPQ finish, threaded 1/2×28, HPT/MPI
  • Muzzle device: A2 Birdcage
  • Gas system: Carbine
  • Gas block: 4140 steel .750″
  • Handguard: M4-76 Wedgelock MLOK free-float rail
  • No Bolt carrier group or charging handle

All NFA laws apply

2 reviews for Sons of Liberty Gun Works M4-76 11.5″ Upper Receiver Group – No BCG, CH

  1. Mike S (verified owner)

    Nice solid upper. Haven’t put any rounds through it yet so take that into account. Really nice finish on it and a lifetime guarantee as Brandon stated. Some good dudes over there at SOLGW. This is my second Son’s upper, both of which have been purchased through Rooftop with very fast shipping and great packaging. I recommend both SOLGW & Rooftop Defense.

  2. Brandon Achacoso (verified owner)

    If you are one of the chosen ones and are lucky enough to catch it in stock…go ahead and grab it! You will not be disappointed…the finish is amazing and looks very nice, I have many AR’s but the quality of the product is just a little bit above the standard of the gun industry… it has the lifetime guarantee by Sons and I believe they are one of the headiest guns on the market as far as being out of the box ready for duty. Do yourself a favor and snag one of these, your wife will understand!

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