Resolute Mk4 5.56 NATO Assembled Upper Rcvr 16.1" Bbl Black
$489.99 at OpticsPlanet · 5 stores
In stock Sale
Best price
$499.99at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- Resolute Mk4 5.56 NATO Assembled Upper Rcvr 16.1" Bbl Black $489.99at OpticsPlanet
- Mk4 Banshee Upper Receiver Group, 5.56 NATO, 12.5", Armor Black $819.99at OpticsPlanet
- Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver Black 10.5… $500.00at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $499.99Salechecked Oct 22, 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.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
Mk4 Banshee Upper Receiver Group, 5.56 NATO, 12.5", Armor Black
$819.99 at OpticsPlanet
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Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver Black 10.5 in
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Faxon Firearms Duty Series AR-15 5.56 NATO 10.5in Upper Receiver Socom Carbine Length 1-8 Twist 1/2x28 without BCG Black
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Rock River Arms Completed Pistol Upper Receiver A4 .223/5.56mm 16 Inch Barrel Mid-Length Profile 1-9 Twist 1/2-28 Thread A2 Flash Hider w/Gas Block
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In stock
Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $499.99 | $499.99 | $499.99 |
Since Oct 14, 2026.
About this part
The CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN 790B3D81 CMM is a 5.56 / .223 upper receiver from CMMG. One store lists it, OpticsPlanet at $499.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- CMMG
- Color
- Coyote Tan
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN 790B3D81 CMM. 56X45 NATO 16.1 TAN 790B3D81 then you have come to the right location.. These AR15 Upper Receivers from the skilled product specialists at CMMG are fashioned working with heavy duty and reliable components to be able to supply you with a product which is going to be useful for quite some time. Manufactured using some of the very best accessible substances and construction these AR15 Upper Receivers through the product experts at CMMG will last an unbelievably lengthy time. CMMG has been developing superior quality merchandise for a very long time and the CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN 790B3D81 is their very own approach to demonstrating exactly how much they care. Here at OpticsPlanet we ensure that it is our responsibility to purchase the most suitable product for all your preferences and presenting the CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN 790B3D81 is something that we're happy to offer. Specifications for CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN 790B3D81: Manufacturer: CMMG Muzzle Device: CMMG Zeroed Muzzle Brake Package Contents: CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 TAN CMM55BB40BCT
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