Patriot Ordnance Factory P415 Edge 16.5" Complete Upper 5.56x45mm 1:8, Black
$1,093.19 at Kentucky Gun Co · 6 stores
In stock
Sage Dynamics 5.56x45 Complete Upper 12.5" Bbl M76 Rail
Sons Of Liberty Gun Works · Upper Receiver
No ratings yetBest price
$1,101.99at Brownells
Out of stock checked Oct 24, 2026
In stock now instead
- Patriot Ordnance Factory P415 Edge 16.5" Complete Upper 5.56x45… $1,093.19at Kentucky Gun Co
- Mk114 Mod 1-M 223 Wylde 14.5" Bbl Complete Upper Thread Only $1,129.95at Ammunition Depot
- Exclusive Mk1 Alpha LT 223 Wylde 14.5"bbl 11.5" MLOK Hdgd Kodia… $1,133.49at Ammunition Depot
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $1,101.99checked Oct 24, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $1,101.99 | $1,101.99 | $1,101.99 |
Since Sep 28, 2026.
About this part
The Sage Dynamics 5.56x45 Complete Upper 12.5" Bbl M76 Rail is an AR-15 complete upper receiver from Sons Of Liberty Gun Works. One store lists it, Brownells at $1,101.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 12.5" · Handguards
- Handguard length
- 12.5" · Barrels
Specifications
- Manufacturer
- Sons Of Liberty Gun Works
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Sons of Liberty Gun Works and Aaron Cowan of Sage Dynamics teamed up to build a hard use AR pistol ready to handle whatever comes its way, and now Brownells has teamed up with SOLGW to offer the upper receiver as a stand alone part to go on the AR-15 SBR or Pistol lower of your choice. The Sage Dynamics upper receiver has a 12.5" barrel made from 4150 chrome moly vanadium that has been high pressure tested and magnetic particle tested. The barrel has a carbine length gas system, a 1-7 rate of twist, and a muzzle threaded A 1/2-28. A muzzle device has been omitted as we know so many customers are running different kinds of suppressors and prefer to mount a muzzle device Mfg: Sons Of Liberty Gun Works
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