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Colt 223 Rem/ 556 NATO M4 Feed Ramps Upper
$179.00 $175.99 Save $3.01
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Most Helpful Positive Review It happens when you deal with Colt
I want to preface this by saying that I did not buy my upper from Optics Planet, but instead received it through RSR and it was the exact same way. No "C"; no cage code... just the square forge mark. This upper actually came in a group of uppers that were marked. The general picture that I am see...
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Most Helpful Negative Review No Colt Proof Mark?
I received this product today (3/29/2019) and it is not as advertised. While it does have the M4 feed ramps, it has no trace of Colt markings (i.e. C proof mark, cage code, etc). My specific model only contained the Square forge mark which is for Brass Aluminum Forging Enterprises (BAFE). With no Co...
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Deceptive picture

by GN, Verified Owner from NY, United States Written on June 20, 2025
The receiver I got only has a Forge mark + M4 Feed. No C mark or cage code. Don't buy it if you want a classic "Colt" upper.
Would recommend: No
1 of 1 found the following review helpful.
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Key forge blank upper

by Izzy, Verified Owner from TX, United States Written on May 13, 2025
Received this upper today assuming it would have a cage code being that all 3 colt rifles I've purchased recently came with a cage code. I doubt this is a real colt part wasted money
Pros:
  • Almost no blemishes
Cons:
  • Generic not colt
Best Used for:
  • Expensive spare part
Would recommend: No
Was it helpful to you? Yes | No

pictures are deceiving

by KG, Verified Owner from NJ, United States Written on April 13, 2025
Pictures show a "C" marked upper but thats not what youre getting.
Would recommend: No
Was it helpful to you? Yes | No

No Colt markings

by Steve, Verified Owner from KS, United States Written on November 28, 2022
Not a single marking on this upper other than the T marks and a keyhole forge marking. No M4 marking, no C stamp or cage code. Nothing. If you are wanting it for the Colt markings then you are out of luck. Other than that it is in spec and good condition.
Would recommend: No
Was it helpful to you? Yes | No

Rail attach

by Dave, from TX, United States Written on August 25, 2020
Can i install a Daniel defense m4a1 fsp rail to this upper ramp assembly? Waiting to know before i decide to purchase this item. Or will it not fit. I’d would like to get some feed back on this. Plus you all are super good with shipping out products in time especially during this crazy time.
Would recommend: Yes
0 of 2 found the following review helpful.
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Colt Upper

by Jake, Verified Owner from IN, United States Written on April 20, 2020
I know Colt has been inconsistent lately with their markings but mine came stamped with their cage code. Its not the colt "c" stamp, but I actually like the look of the cage code better. The anodizing is good, but the black dye didn't quite get into the internals giving it an ashy look inside. The upper is also does not have dry film lube on the inside. Neither is a big deal to me.
Pros:
  • Cage code marking, M4 marking on the front face of the rail above the barrel extention threads
Cons:
  • Inside is lackluster. Perhaps evidence of Colt's recent struggle in the market?
Would recommend: Yes
1 of 1 found the following review helpful.
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Real deal colt upper

by Aquajoe182, from PA, United States Written on March 16, 2020
The upper I received is current production square forged colt upper. Complete with dry film, white T marks and M4 feedramps. It does have cage code, but no C stamp, which is not a deal breaker. If your looking for a “proper” marked colt upper, this is not it. If your looking a battle proven colt upper for your next user, this is your huckleberry
Would recommend: Yes
1 of 1 found the following review helpful.
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Not Stamped How I'd Like, But Its the Real Deal

by Colt AR Collector, Verified Owner from WI, United States Written on November 15, 2019
Colt as of late has really cut back on stamping their parts with the famous "C". Since Colt announced they were abandoning the civil market, I bought two of these from Optics Planet. No C stamping, but there was a cage code on both receivers. Also, the tiny "M4" stamp was above the gas tube entranced. All-in-all an identifiable and genuine Colt upper receiver. Get them while you can.
Pros:
  • Colt Mil Spec
Cons:
  • Expensive, hard to find
Best Used for:
  • Your AR-15 Project
Would recommend: Yes
2 of 2 found the following review helpful.
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