Stern Defense MOD5 MLOK 16.1" 45 ACP AR-15 Complete Upper
$593.11 at OpticsPlanet · 3 stores
In stock Sale
CMMG MkG Resolute Upper Receiver Group .45 ACP 16.1in Armor Black
No ratings yetBest price
$909.99at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- Stern Defense MOD5 MLOK 16.1" 45 ACP AR-15 Complete Upper $593.11at OpticsPlanet
- Stern Defense SD 6in MOD5 MLOK .45ACP Upper Receiver Assembly 8… $550.00at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $909.99Salechecked 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.
Stern Defense SD 6in MOD5 MLOK .45ACP Upper Receiver Assembly 8in M-LOK Handguard .578-28 TPI 1-16 Twist Rate Black 015SD8INMD5ML6INBR45ACPKK
$550.00 at OpticsPlanet · 2 stores
In stock Sale
Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $909.99 | $909.99 | $909.99 |
Since Oct 14, 2026.
About this part
The CMMG MkG Resolute Upper Receiver Group .45 ACP 16.1in Armor Black is a 16.1" .45 ACP upper receiver from CMMG. One store lists it, OpticsPlanet at $909.99.
Fits and works with
- Caliber
- .45 ACP · Shop matching ammo
- Bolt
- .45 ACP · Bolt carrier groups
- Barrel length
- 16.1" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Black
- Platform
- AR-9
- Caliber
- .45 ACP
From the manufacturer
CMMG MkG Resolute Upper Receiver Group .45 ACP 16.1in Armor Black. 45 ACP has been the pistol caliber of choice for many shooters. For anyone looking to complete the ultimate pistol caliber carbine the RESOLUTE Upper Group chambered in .45 ACP is here. Specifications for CMMG MkG Resolute Upper Receiver Group: Manufacturer: CMMG Caliber: .45 ACP Barrel Length: 16.1 in Barrel Profile: Medium Tapered Muzzle Device: CMMG Zeroed Muzzle Brake Color: Armor Black Gun Rail: M-LOK Magazine Included: No Condition: New Mount Type: M-LOK Package Contents: CMMG MkG Resolute Upper Receiver Group CMMG 45B85B3-AB: MkG Resolute Upper Receiver Group .45 ACP 16.1in Armor Black
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