Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

M16 20 INCH 5.56 COMPLETE UPPER RECEIVER GROUPS

M16 20 INCH 5.56 COMPLETE UPPER RECEIVER GROUPS Reviews & Ratings

M16 Upper Receiver Groups now available from Colt! These 20” Upper Receiver Groups feature the same barrel used on M16A2 and M16A4 rifles, which has a Government profile and feature a chrome lined bore and chamber, along with a 1-7 twist. Colt has paired two of these models with Magpul MOE handguards to make them fully modular. Additonally these are available with or without a charging handle and bolt carrier group.

View Product
Write a review
5 Stars
87%
4 Stars
13%
3 Stars
0%
2 Stars
0%
1 Stars
0%
Reviews Summary
Overall, customers express strong satisfaction with the M16 20 Inch 5.56 Complete Upper Receiver Group, praising its quality, fit, and fast shipping. However, a few reviewers note concerns over quality control regarding markings and scratches, and some have experienced gas system issues. Most feel it's a reliable and well-made product that lives up to its Colt reputation.
What Reviewers Are Saying
Product Quality
75%
Many reviewers highlight the exceptional quality of the Colt upper receiver, showcasing its solid construction, lightweight design, and precise markings that indicate thorough attention to detail. Overall, the craftsmanship meets or exceeds customer expectations.
Fit and Compatibility
60%
Customers frequently mention that the upper receiver fits well with various lower receivers, suggesting compatibility across different models. The tight fit and secure connections are reassuring and add to the product's reliability.
Shipping Experience
50%
Several reviewers report a positive shipping experience, with items arriving faster than expected. This aspect adds to the overall satisfaction, allowing customers to start building their rifles without long delays.
Quality Control Concerns
30%
A small percentage of customers voice concerns regarding quality control, particularly related to external markings and minor cosmetic scratches upon arrival. Some express disappointment over receiving parts that did not fully meet the expected Colt specifications.
Customer Satisfaction
80%
The overarching theme of satisfaction is prevalent, as many users express contentment with their purchase, indicating a strong faith in Colt's reputation for quality. This positive sentiment underscores the community's loyalty to the brand.
Customer Photos & Videos
5
COLT M16 FLAT TOP
Excellent original Colt upper receiver. The barrel is marked with the letter "C" and also has the government mark. Extremely lightweight and the quality is amazing. This is an excellent piece of engineering. You have no idea how happy I am that I made the right decision.
Would you recommend this? Yes, I would recommend to a friend
5
Pure Colt
got my 20 in upper, perfect fit for my M4 Carbine. All Colt markings present on both upper and barrel
Would you recommend this? Yes, I would recommend to a friend
5
Great quality
Has the cage code!!!
5
Colt 20” 5.56 complete upper W/ Magpul handguard
Solid looking & functioning upper. BCG & charging handle cycle by hand just fine with a bit of extra lubricant. Fresh out of the box, after removing the protective metal wrapping, the whole upper & barrel had plenty of factory lubricant on it. I have yet to shoot it because I am waiting for my A2 stock, A2 handguard, and buffer tube to arrive. I will point out that there was a very small scratch on the barrel by the 1/7 twist marking, but I do not mind. This upper is gonna be paired with a surplus style A2 lower, so a singular tiny scratch wont look out of place at all. It’s still gonna function great, bc after all, it is a Colt upper. It has the typical keyhole stamp marking on the left side of the upper, as well as the “M4” marking in between the upper & the delta ring. Relatively fast shipping considering I live in AZ. Well worth the price.
Would you recommend this? Yes, I would recommend to a friend
5
Colt 20” complete upper w/ magpul handguard
Solid looking upper. I have yet to shoot it because I am waiting for my A2 stock, A2 handguard, and buffer tube to come in. There was a very small scratch on the barrel by the 1/7 twist marking, but I do not mind. This upper is gonna be paired with a surplus style A2 lower, so a singular tiny scratch wont look out of place at all. It’s still gonna function great, bc after all, it is a Colt upper. Relatively fast shipping considering I live in AZ.
5
Colt A/R complete upper
You cant go wrong with a superior product and a great company who stands by their products.
5
Surprised
I was surprised to have received a properly marked upper considering Colt has spotty QC and throws outsourced parts together. My upper came with a F marked FSB, dot matrix 13629 cage code on the upper along with a square forge mark, M4 mark above gas tube and properly cut M4 feed ramps and a C marked barrel. A2 hand guards are rock solid. Luck of the draw!
5
Great Quality and Packaging
Feels like its made of great quality. Like it does well to match the rifle from games like Call of Duty and Battlefield. Comes in minimalistic packaging and a book that teaches the user in how to use the rifle. No defects of any kind visible.
5
Colt Upper
Ordered a 20 inch Colt barreled upper. Great price fast shipping. Upper was cage coded w/ M4 stamped near gas tube hole. Front sight base F marked
5
Colt AR Top
Flawless, Mounted to Colt M4, fit and finish is excellent.