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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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 NAT 16.1 TUNG CB2D9AE9 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
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
CMMG UPPER GRP RES MK4 5.56X45 NAT 16.1 TUNG CB2D9AE9 CMM. 56X45 NAT 16.1 TUNG CB2D9AE9 then you've come to the ideal spot.. These AR15 Upper Receivers through the skilled product professionals at CMMG are made working with dependable and dependable materials in order to supply you with a product that will be beneficial for a long time. Made using some of the best accessible substances and construction these AR15 Upper Receivers through the product experts at CMMG can last an incredibly lengthy time. CMMG has been developing top quality products for a number of years and the CMMG UPPER GRP RES MK4 5.56X45 NAT 16.1 TUNG CB2D9AE9 is their approach to demonstrating exactly how much they care. At OpticsPlanet we make it our responsibility to purchase the most suitable solution for your requirements and showcasing the CMMG UPPER GRP RES MK4 5.56X45 NAT 16.1 TUNG CB2D9AE9 is one thing that we are happy to offer. Specifications for CMMG UPPER GRP RES MK4 5.56X45 NAT 16.1 TUNG CB2D9AE9: Manufacturer: CMMG Muzzle Device: CMMG Zeroed Muzzle Brake Package Contents: CMMG UPPER GRP RES MK4 5.56X45 NAT 16.1 TUNG CMM55BB40BTNG
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