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M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER

M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER Reviews & Ratings

The Daniel Defense M4A1 SOCOM Block II Upper Receiver has been designed for those looking to match the specs and performance on the M4A1 SOCOM Block II carbines used by troops during Operations Iraqi Freedom and Enduring Freedom. The Daniel Defense M4A1 SOCOM Block II Upper Receiver features a quad-rail handguard equipped with a Picatinny-compatible rail sections. The barrel is cold hammer forged from mil-spec chrome-moly vanadium steel and features a SOCOM, heavy profile, with a chrome-lined interior, matching military-style barrels with the same construction. The gas block is a Daniel Defense pinned low profile block, the same as the current generation provided to SOCOM.


  • Choose upper receiver with or without a B5 SOPMOD stock.
  • Made from 7075-T6 aluminum
  • Barrel length: 14.5 inches
  • Twist rate: 1:7
  • DOES NOT include BCG, charging handle or flash hider


The Daniel Defense M4A1 SOCOM Block II Upper Receiver features a flat dark earth anodized finish.


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Reviews Summary
Customers rave about the M4A1 SOCOM BLOCK II upper receiver, praising its construction quality, accuracy, and robust build. However, many are disappointed with the missing M203 hangar kit, and some highlight cosmetic blemishes. Despite concerns over the upper's weight and certain design elements, most users agree it offers excellent value, especially for a heavy-duty choice.
What Reviewers Are Saying
Product Quality
75%
Many reviewers highlight the outstanding quality of the upper receiver, noting its solid construction, durability, and accurate performance. The precision of the barrel and the overall design contribute to a favorable perception of its build and utility.
Missing Features
40%
A common point of frustration among reviewers is the absence of the M203 hangar kit, which many expected to be included. This lack has led to disappointment, particularly for those intending to use specific accessories.
Cosmetic Issues
35%
Some customers report minor blemishes or imperfections in the anodizing and finish of the upper receiver. While these do not affect functionality, they contributed to some dissatisfaction regarding the product’s presentation.
Weight Concerns
30%
A number of users mention the upper's weight, suggesting it may not be suitable for everyone. Despite this, many appreciate that the weight provides stability and mitigates recoil, especially with the heavy profile barrel.
Value for Money
65%
Overall, reviewers consider the price of the upper to be reasonable given its quality and features. Many assert that it represents a great value compared to alternative options on the market, especially for serious users.
Customer Service Experience
25%
Customers generally express satisfaction with the service provided by Brownell's, praising their friendly and responsive support, particularly in handling inquiries and confirming orders.
2
Does NOT have m203 hangars
Ordered this upper specifically to mount an m203 to and the rail does not have the hangar kit installed. According to reddit, they stopped installing them on commercially sold uppers. So, after waiting for my tax stamp, etc i get to wait longer to hear back from DD and then take apart and put back together a factory built upper to install them myself. If you want to mount a 203 or masterkey, buyer beware.
2
Great upper but blemished product
Im only rating 2 stars because nowhere on the description does it say it would be missing anodizing. If it said that on the description I would still buy it but would show they are transparent about their rifles. These are high quality uppers, and I dont mind banging up my rifles, i throw them around because thats what tools are for. But what bothers me is that a reputable company would be satisfied in sending their finished product in these conditions and sell them that way, only because they are a respectable name company. My suggestion is to put on the description the guaranteed scuffs and missing anodizing it will have, just like previous reviewers suggested. Its like you are lying to your buyers.
2
Not what I was expecting
The actual upper receiver does not have daniel defense on it as it does in the picture. Seems cheap. Better off getting it from somewhere else that ships you what you order....