Posted: 12/3/2014 5:32:09 PM EDT
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I'm losing my mind here. I've been looking at pictures of both and still can't figure it out.
My question: Am I good to go with an A3 upper with M4 feed ramps, paired with a barrel with M4 ramps? What the fuck is the difference between an A3 and an A4? I thought the A3 didn't have M4 feed ramps?  Halp me...I haven't had coffee yet.
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Quoted: I'm losing my mind here. I've been looking at pictures of both and still can't figure it out. My question: Am I good to go with an A3 upper with M4 feed ramps, paired with a barrel with M4 ramps? What the fuck is the difference between an A3 and an A4? I thought the A3 didn't have M4 feed ramps? Halp me...I haven't had coffee yet. |
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The M16A3 (not a flat top) doesn't have M4 feed ramps.
The M16A4 doesn't have M4 feed ramps. The M4 carbine does have M4 feed ramps. Whatever the hell a company decides to call it's flat top receiver? No rules on that, just check in the specs to see if it has M4 feed ramps. |
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Quoted:
Flip a coin. That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. |
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Quoted:
That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. Quoted:
That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. What the individual company decided to call it. IE, the difference is one's called an A3 and one's called an A4. ETA: In the olden days of yore, commercial companies such as Bushmaster called the flat top an "A3," I guess since it was the next iteration after the A1 and A2 receivers. This had nothing to do with the military designation, wherein the M16A3 had an "A2" upper while the M16A4 was a flat top. It's worth noting that neither of those rifles have M4 feed ramps. Armalite, and others I'm sure, opted to call their flat top receiver an A4, keeping more in line with the military designation. The trend has continued, and M4 feed ramps are just another variable in the mix. |
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Quoted:
That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. Quoted:
That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. NOTHING. They are marketing terms - defined by individual companies who don't agree with each other. Now if you want to talk about military rifles... Well that's a separate discussion. |
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Quoted:
Just about every barrel you'll see for sale has M4 feed ramps so its not really a big deal. Maybe if you buy weird retro shit. It's actually starting to screw up the retro world. DEZ's latest run of 1:7 A1 profile barrels has the feed ramps. What's been a real PITA has been finding a carbine barrel w/out the ramps for the Stag LH upper I have. |
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Quoted:
NOTHING. They are marketing terms - defined by individual companies who don't agree with each other. Now if you want to talk about military rifles... Well that's a separate discussion. Quoted:
Quoted:
That's not the question; I'm just showing the add description. They're both A3 w/ m4 feed ramp cuts. I'm asking what the difference between an A3 w/ M4 ramps vs. an A4 with M4 ramps is. NOTHING. They are marketing terms - defined by individual companies who don't agree with each other. Now if you want to talk about military rifles... Well that's a separate discussion. Thank you 
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