CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black
$849.99 at OpticsPlanet · 2 stores
In stock Sale
Mk4 Banshee Upper Receiver Group, 5.56 NATO, 12.5", Armor Black
No ratings yetBest price
$819.99at OpticsPlanet
Out of stock Sale checked Nov 3, 2026
In stock now instead
- CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Ar… $849.99at OpticsPlanet
- CMMG DISSENT Mk4 5.56x45mm NATO 10.5in Upper Receiver 1-7 Twist… $1,035.99at GunMag Warehouse
- Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45… $819.89at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $819.99Salechecked Nov 3, 2026 | Out of stock | Buy at OpticsPlanet |
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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This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
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Price history
Lowest in-stock price in the last 30 days: $819.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 5, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $819.99 | $819.99 | $849.99 |
Since Oct 5, 2026.
About this part
The Mk4 Banshee Upper Receiver Group, 5.56 NATO, 12.5", Armor Black is a 12.5" 5.56 / .223 upper receiver from CMMG. One store lists it, OpticsPlanet at $819.99. The lowest in-stock price in the last 30 days was $819.99 at OpticsPlanet.
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
Specifications
- Manufacturer
- CMMG
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Complete 12.5-inch 5.56 upper group from CMMG's Banshee line.
Builds that use this part
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