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M4 LE6920 Upper Group 16in with BCG and Sights

M4 LE6921 Upper Group 14.5in with BCG and Sights

M4 LE6933 Upper Group 11.5in with BCG and Sights

COLT - M4 LE6920 Upper Group 16in Stripped

44 Reviews

Barrel Length

16.10
14.50
11.50

Receiver Style

Complete
Stripped

M4 LE6920 Upper Group 16in Stripped

Brownells #

160000446

MFR #

SP401397

UPC

098289600127

$495.99

Purchase Limit

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK

Can we ship this to you? (US only)

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International purchase information

Specifications

Barrel Length:

16.10

Color:

Black

Barrel Contour:

Medium

Item Length (Inches):

16.100

Cartridge:

5.56x45 NATO

Finish:

Matte

Make Model Fit:

AR-15.Universal

Twist:

1-7

Receiver Style:

Stripped

Restriction

Threaded Barrel Restriction:

Yes

View US State Restrictions

Can we ship this to you? (US only)

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International purchase information

What is the COLT - M4 LE6920 Upper Group 16in Stripped?

Add the Colt legend of reliability to your rifle or build with these complete feature 1/7 RH twist in a chrome lined, button rifled barrel. Available with or without a charging handle, bolt carrier group, and back up sights. All NFA rules apply.

NOTE: “Stripped” does NOT include bolt carrier group (BCG), charging handle, or rear backup sight

Threaded Barrel Restriction:
Threaded Barrels have restricted shipping to CA.

Available options

Image	Description
	M4 LE6920 Upper Group 16in with BCG and Sights UPC: 098289035295
	M4 LE6921 Upper Group 14.5in with BCG and Sights UPC: 098289035325
	M4 LE6920 Upper Group 16in Stripped UPC: 098289600127
	M4 LE6921 Upper Group 14.5in Stripped UPC: 098289600134
	M4 LE6933 Upper Group 11.5in with BCG and Sights UPC: 098289035349
	M4 LE6933 Upper Group 11.5" Stripped UPC: 098289600141

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Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.
Standard Dealers

Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.
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Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

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M4 5.56 UPPER RECEIVER GROUPS REVIEWS

4.3

44 Reviews

5 Stars

64%

4 Stars

16%

3 Stars

11%

2 Stars

1 Stars

Reviews Summary

Customers generally appreciate the Colt M4 upper receiver for its quality and performance, with many highlighting fast shipping and solid build. However, several reviews raise concerns about missing markings like cage codes, assembly inconsistencies, and some disappointments with customer service regarding warranty issues. Overall, it's deemed a good product, yet caution is advised due to quality control variances.

What Reviewers Are Saying

Product Quality

70%

The quality and performance of the Colt M4 upper receivers are frequently noted positively, with many users reporting excellent fit and finish, alongside commendable shooting accuracy. However, inconsistencies in assembly and missing markings like cage codes were common red flags for some buyers, suggesting variability in quality control across batches.

Shipping and Packaging

60%

Reviewers generally praised the shipping process as swift and efficient, with many commenting on proper packaging of the product upon arrival. A few customers did express concerns about the packaging quality and presentation, noting instances where the items were not packed in original Colt boxes, raising doubts about authenticity or care in handling.

Markings and Identification

55%

A significant theme across reviews is the disappointment expressed regarding missing or incorrect markings, particularly cage codes and M4 stamps. Several buyers expected all correct markings as part of quality assurance from Colt but found inconsistencies, leading to concerns about the product's authenticity and overall manufacturing quality.

Customer Service

40%

Experiences with customer service ranged widely; while some customers noted helpful interactions, others faced challenges with warranty and issues regarding missing parts. The feedback indicates a need for better clarity and more reliable support from retailers when addressing product deficiencies, particularly regarding expansive warranties.

Value for Money

50%

Many reviewers felt that despite the noted concerns, the Colt M4 upper receiver offered good value for its price, especially considering the reputation of the Colt brand. However, there's a growing sentiment that customers might explore other brands offering competitive pricing and more consistent quality, hinting at shifting market dynamics.

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Great deal

Stripped 11.5 upper. Cheapest Colt Commando upper anywhere. I just applied to SBR my lower yesterday!!!

Would you recommend this? Yes, I would recommend to a friend

by MARK WILLIS on January 02, 2026

Verified Purchase

Was this review helpful? 0

Colt upper

It’s a great addition the colt name carries a lot of weight. Shipping was an issue. I won’t mention the carrier. No fault to Brownells. Maybe weather. Thanks for having this piece in stock.

Would you recommend this? Yes, I would recommend to a friend

by CHARLES VAN DEUSEN on July 20, 2025

Verified Purchase

Was this review helpful? 2

Colt commando 11.5

Love the deals brownells offers !

by MICHAEL BARTO on August 24, 2024

Verified Purchase

Was this review helpful? 2

Great

Came with cage code and all the markings on barrel and m4 mark behind the delta ring. Did seem to be fired but I just assumed it was test fired in facility as it was sealed in the blue plastic rifle bag . Would add pictures but would not allow me

by Somata on July 28, 2023

Verified Purchase

Was this review helpful? 5

Excellent

Excellent ,bcg stamp c magpul site,NOT A COLT SITE but MATECH some people 5 stars

View All 44 Reviews

Customer Questions

190 Questions

COLT - M4 LE6920 Upper Group 16in Stripped

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M4 5.56 UPPER RECEIVER GROUPS REVIEWS

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