Monolithic M4 Le6943 Upper Group 11.5in With BCG And Sights
$1,184.50 at Kentucky Gun Co · 5 stores
In stock
Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver Government Carbine Length 1-7 Twist 1/2x28 A2 Flash Hider Manganese Phosphate Black
No ratings yetBest price
$1,059.00at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- Monolithic M4 Le6943 Upper Group 11.5in With BCG And Sights $1,184.50at Kentucky Gun Co
- Colt EPR II Pro AR-15/M16/M4 5.56x45mm NATO 16.1in M-LOK Upper … $929.99at OpticsPlanet
- Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper 5.5… $1,053.50at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $1,059.00Salechecked 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.
Colt EPR II Pro AR-15/M16/M4 5.56x45mm NATO 16.1in M-LOK Upper Receiver Government Carbine Length 1-7 Twist 1/2x28 A2 Flash Hider Manganese Phosphate
$929.99 at OpticsPlanet
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Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper 5.56x45mm 1:8, Black
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M-LOK Mk116 Mod 1-M 223 Wylde Upper Receiver W/16.1" Bbl
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Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $1,059.00 | $1,059.00 | $1,059.00 |
Since Oct 14, 2026.
About this part
The Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver Government Carbine Length 1-7 Twist 1/2x28 A2 Flash Hider Manganese Phosphate Black is a 16.1" 5.56 / .223 upper receiver from Colt. One store lists it, OpticsPlanet at $1,059.00.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Carbine · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 16.1" · Handguards
- Handguard length
- 16.1" · Barrels
Specifications
- Manufacturer
- Colt
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver Government Carbine Length 1-7 Twist 1/2x28 A2 Flash Hider Manganese Phosphate Black. 56x45mm NATO 16.1in M-LOK Upper Receiver then you have showed up at the ideal location.. Formulated by using several of the most strong and dependable materials in existence these AR15 Upper Receivers via Colt provides you with an item which will give numerous years of reliability. Colt has been developing high-quality products for a very long time and the Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver is their particular way of revealing how much they are concerned. Here at OpticsPlanet we make it our responsibility to obtain the perfect product for your requirements and exhibiting the Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver is something that we're happy to offer. Specifications for Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver: Manufacturer: Colt Caliber: 5.56x45mm NATO Overall Length: 32.5 in Barrel Length: 16.1 in Barrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Manganese Phosphate Color: Black Gun Model: M4 M16 AR-15 Fabric/Material: Aluminum Attachment Type: M-LOK Picatinny Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Rail: Picatinny M-LOK Gun Type: Rifle Gun Make: Colt AR Platform Flutes: No Features of Colt M4 to M5 Carbine Upper Reciever Kit: Package Contents: Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver What firearm models does the manufacturer say Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver is compatible with? The manufacturer suggests that Colt M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver is compatible with AR-15 M4 M16Colt CM556-16-CK: M4 to M5 Carbine 5.56x45mm NATO 16.1in M-LOK Upper Receiver Government Carbine Length 1-7 Twist 1/2x28 A2 Flash Hider Manganese Phosphate Black
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