Posted: 4/16/2006 9:12:31 AM EDT
| Did CMMG stop selling the light weight barrels? I didn't find any on their webpage..... I was going to use my tax return to buy a 14.7 flatop! |
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Whew! I was really wanting to get the 14.5" LW w/F FSB etc, but with the Phantom 5C1 instead of the 28a. Thought you had discontinued them. Also wanting an 11.5" LW for a pistol build, but that 10.3" looks good, too. Any chance of either of these in a lightweight configuration any time soon? Oh, any time frame on the 14.5"ers? |
+1 ETA - I realize that making a run of barrels using 2 different FSB's is not very time and cost effective so if this is going to be a one or the other type scenario, IMO, it would be better if you used standard FSB's on these barrels. Reason is, I think a far amount of these would be bought by people wanting to build a KISS type upper using a A1 or A2 upper receiver. If you used standard FSB and people installed these in A3 uppers, then can easily use a taller FSP for the same net effect. If you use "F" height FSB, those of us wanting to use A1\A2 uppers are SOL. I feel the same way about M4 vs Standard feedramp barrels ext. There are plenty of A3 upper choices with and without factory feed cuts. Guys wanting to use A1\A2 uppers don't have many options for uppers with factory feedcuts. Although is this case, it may be a little more practical to make some barrels with each ext. type? Just my $.02 |
That pretty much sums it up. |
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There are currently available barrels that have the standard FSB and feedramps. Hopefully CMMG is trying to fill a void in the market, not just putting out another product that is already available from multiple sources. In that respect, offering the "F" FSB and M4 ramps is the smart business move. Also, all but the A1 spec uppers that CMMG sells have M4 ramps so the barrels should have them as well to mate with their current product line. I would like to see them make it both ways, but if we only get one choice then M4 and F is the way to go. |
Really? Please provide a link to the source of 14.5, 14.7 or 16" true lightweight profile chrome lined barrel with a 1/7 twist and a standard FSB and feedramps? The only one that comes close is Colt but they usually come with M4 ramps and almost all are 16". (Not to mention the only consistent source for them is SAW Sales and at their prices, you would have to be desperate or an idiot to buy one). The next closest is the BM version with a 1/9 twist but you can’t even find those right now. (FYI - I did hear that there may be a source for BM Superlight barrels in 1/7 twist soon but I'll believe it when I see it)
I think you meant to say, in your opinion right?  IMO, you are wrong. A smart business move is to offer a product that will work for (and hence be appealing to) the widest audience possible. I don't want to start another debate about the usefulness of M4 ramps. I personally feel no need for them but given the option with everything else being equal, sure I’ll take them as there is no down side to them. They are one of those ARFCOM fashion things and not offering them at all would turn some people off. That said, I still don’t think it would be too hard to offer both. On the other hand, the “F” height\marked FSB thing is just moronic. There is no reason for it. If you are going to mount the barrel in an A3 upper, use the taller FSP. It’s that simply and there is no down side. Hell, CMMG could even ask the customer to specify which sight post they wanted at the time the order is placed. It’s real simply in my opinion. If the barrels come with an “F” height FSB, they will loose sales. If they come with a Standard height FSB the only sales they will loose are to people who too worried about ARFCOM fashion trends to realize that “F” marked FSBs are way over hyped and are more of a limitation then a benefit.
According to their website.. 1. Only their A2 uppers come with M4 Feedcuts 2. Both the A1 and A2 uppers come with a Teflon coating applied. Something I personally am not interested in. Either way, some of us are only interested in a barrel as we already have upper in hand that we would like to use and don’t want to have to buy another one just to use this barrel. This is just my $.02 on it |
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There is a world outside of AR15.com and people in that world prefer M4 ramps and F FSBs. I do prefer, but nobody had qualified, the 1:7 twist. If you must have a 1:7, lightweight, standard FSB and feedramp barrel then no, there isn't one currently available. I don't need to qualify my statements with "in my opinion" as that is redundant. I said it, therefore it's my opinion. The bottom line here is that you're trying to get them to produce what you want and I'm trying to get them to produce what I want. Ideally they will do both AND allow for some mixing and matching. What would be a good niche market for a barrel maker is to offer the parts a la carte so that you can order your own combination. Want an A2 barrel profile with M4 ramps and F/FSB? No problem. Want an A1 Barrel with M4 ramps and standard FSB? No problem. They'd really only need to stock the basic elements and just assemble the barrel upon order. |
Absolutely and there’s nothing wrong with that. I just prefer to go one step further and explain why I want what I want. Even more so when I feel what I want makes a lot more sense then what is being offered.
People can prefer what ever they like, regardless of what world or planet they come from but what I would like to know is why? I think I’ve done a fairly good job of explaining why I think a standard FSB is the better way to go. Can you provide any logical or factual reason why using an “F” height FSB makes more sense? (Other worldly people’s preferences aside)
While I agree, I'm guessing that this will not be the case here.
Well that would be nice but I don’t see anybody doing exactly that (and making a living doing it). Actually there are at least two places that I can think of who do something similar, John Holliger @ White Oak Armament and Randall @ AR15barrels.com but I do not believe either one of them will build you a barrel that is chrome lined or that has a fixed FSB installed with taper pins. Even if it was feasible to do, I doubt a person could make a living off of it because I doubt too many people would go for it because… 1. I can’t see a person being able to offer a custom barrel like that, with chrome lining and such, for less then $300. The number of people willing to spend $300+ on a non-precision AR barrel can not be that great and of those numbers, there is already a fair amount of competition out there for those people’s dollars. 2. I can’t see some place being able to do that with less then a few weeks turnaround. It seems to me that most people, when they decide they need\want a new barrel, they want it now. That leads to the next problem… 3. If you order one and if, when it arrives, it’s not right, (wrong profile, wrong FSB, Canted FSB, whatever), you would then have to wait another “x” number of weeks to get the replacement. Don’t get me wrong, I agree it would be nice if some place like that existed but again, I just don’t see it.
Not to get side tracked on semantics but a person can write facts or they can write opinions. Just because you “said it” does not clearing identify it as an opinion any more then it would automatically make it fact. Whether done intentional or just a side effect of poor grammar, too many people on the Internet throw around opinion as fact. Case in point, the second quote from you above about what the people outside of AR15.com want. That is your opinion but it is stated as if it were a fact. Anyway, have a good one  |
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M4 feedramp barrels work fine in standard receivers (not the other way around though). An F marked FSB can usually have the standard post adjusted down a bit and get zero, the same cannot always be said of the reverse - many times a taller (special) post is required which limits the front sight choices. M4 ramps and F height FSB are the more "universal" choice. |
And this is were I will continue to disagree. If you can't adjust down a standard post in an "F" marked FSB far enough to properly sight the weapon in, you are screwed and have to whip out a dremel or use some other crude fix. If you need more adjustment on a Standard post in a standard FSB, you simply spend a buck or two get a taller post which is available from a bunch of different places. Like I said originally, CMMG could even provide either or both posts at the time of the order. If your barrel is going on a flat top, get the tall FSP. If you are using an A1 or A2 upper, get the standard post. Can't get any easier then that. The standard FSB is the only truly "universal" choice. That's why it's the only FSB most of the big AR makers (BM, RRA, DPMS, etc.) use. LMT only makes A3 uppers so they only use "F" FSBs. Colt is the only company I am aware of that bounces back and forth as needed. |
Common myth around this board. A extened cut ramp extension in a non cut upper does not block the round from hitting the receiver, causing excessive wear. When the extension and upper match, the round doesn't ride excessively on the receiver. |
It's amusing to me that you would waste the time and effort to go through and make a post like this as if any of it matters. I don't really care what you want or why, and I don't really care if you think you won some interweb debate over the relative merits of F FSBs and M4 feedramps.
There, I win. 
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Silly me, I thought this was a discussion forum and I was communicating with another adult. What in the hell was I thinking?  Next time, just tell us all up front that you have nothing intelligent to contribute  Later |
This statement makes no sense to me. No design barrel extension "blocks the round from hitting the receiver". I cannot fathom how this would increase wear (what is being worn?). |
Excuse the noob here but what is the difference in the "F" marked sight and the standard FSB? Is their a difference in A3 uppers that requires two different FSB heights? I would be very interested in one of these on a CMT A3 upper wit either a carry handle or a ARMS or something similar |
The barrel extension edge and receiver hole edge are flush when the proper receiver/barrel extension are used. |
Which will only matter if the round tip hits the receiver and not the barrel extension. Which would be the exact same result with a standard (non M4) receiver irrespective of the barrel extension. |
No, I can't explain this further without pictures. |
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HMMM I know I have been hollarin for a 16 middy lightweight, but the 14.5 midlength lightweight is somethign I had never thouht about before. I guess it would have the same amount of barrel in front of the gas port as a rifle barrel cut down to 18.5" wouldnt it? Have you built any of these before to know how to work the gas ports or has someone else built these? Sounds great to me. The roominess of middy, but 16+ inches with a permanently attached phantom. |
DOH..dumb remark on my part. After looking around I realized 14.5 midlengths were commonplace. Sorry. Ill be in for one when you begin taking orders as a complete upper. |
I have the same question |
Website does have the following: CMMG 14.5 Lightweight Mid-Length Upper w/Permanent Phantom and .625" FSB New 14.5" lightweight mid-length upper w/permanent phantom hider. Permanent phantom hider brings OAL barrel length to legal 16” This upper is complete with bolt, carrier and charging handle. CMMG semi auto bolt carriers have the shrouded firing pin to protect against hammer wear. Upper receivers are "T" marked and include extended feed ramp cuts. Features include lightweight profile mid-length barrel with 11 degree recessed target crown, triangle handguard cap, chrome lined 5.56mm chamber and bore, 1/7 twist, parkerizing under .625" diamter “F” marked forged front sight base and magnetic particle testing on every barrel. When ordering with optional gas block, barrels will not be drilled for taper pins. Barrel is marked CMMG MPC 5.56 NATO 1/7 |
Try these threads off the archive Fiend. Archive 1 Archive 2 Archive 3 Thanks for the info on the 16" middy Jeff. 
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I would buy a 14.5 or 14.7" lightweight 1:7 as long as it had a perm attach FS. I saw this one on the website. are they in stock? 14.5 Lightweight CAR w/Phantom Barrel New production 14.5” lightweight CAR w/Phantom MOD4 barrels. Permanent hider brings OAL to legal 16”. Features include parkerizing under .625 diameter “F” marked forged front sight base, chrome lined chamber and bore, MP testing, lightweight profile, 5.56mm chambering, 1/7” twist, M4 barrel extension, mil-spec parkerizing, drilled gas port, and standard 1/2x28 threads. Included with barrel is A2 sight assembly, round handguard cap and barrel nut. Barrels are engraved “CMMG MPC 5.56 NATO 1/7”. Price: $299.95 |
You bet! They are shipping. I got my 14.5" Middy upper Thur from CMMG. Gonna take it out to the range tomorrow and give it a good working. I will post pics and my range review tomorrow night. It looks nice. Very light weight. Wife was very happy. 
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