Monolithic M4 Le6943 Upper Group 11.5in Stripped

Name: Monolithic M4 Le6943 Upper Group 11.5in Stripped
Brand: Colt
Availability: OutOfStock

Colt · Upper Receiver

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Best price

$839.99at Brownells

Out of stock checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$839.99checked Oct 1, 2026	Out of stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Dashed line = out of stock. Tracking since Sep 28, 2026.

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Store	Latest	Lowest	Highest
Brownells	$839.99	$839.99	$839.99

Since Sep 28, 2026.

About this part

The Monolithic M4 Le6943 Upper Group 11.5in Stripped is an AR-15 stripped upper receiver from Colt. One store lists it, Brownells at $839.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 11.5" · Handguards

Specifications

Manufacturer: Colt
Type: Stripped
Platform: AR-15
Caliber: 5.56 mm NATO

From the manufacturer

The LE6940 and LE6945 Upper Receiver Groups offer and upgrade over the traditional M4 setup. The LE6940 features Colt's monolithic upper receiver, which provides a one piece Picatinny top rail and rigid mounting surfaces all around, in addition to a completely free floated barrel. Built-in flip-up front sight is compatible with most standard height rear sights. Available with 16" or 10.3" chrome lined, 1-7 twist, button rifled barrel. Available with or without a charging handle, bolt carrier group, and back up sights. All NFA rules apply. Mfg: Colt