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Here are my M4gery/M4 threads (only goes back to 2003): archive.ar15.com/forums/topic.html?b=3&f=118&t=270875 archive.ar15.com/forums/topic.html?b=3&f=118&t=260644 archive.ar15.com/forums/topic.html?b=3&f=118&t=231110 archive.ar15.com/forums/topic.html?b=3&f=118&t=229465 archive.ar15.com/forums/topic.html?b=3&f=118&t=217484 The Carbine variation guide is now up, and should contain all that info, plus more, and more accurately then those old threads: www.ar15.com/forums/topic.html?b=3&f=118&t=283545 |
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In regards to the "P M" marked upper, I have a "P M" marked A1 upper with forward assist that I purchased as a complete upper on the EE a few years ago. It has a black finish that appears to be original (black on the inside too). I cannot confirm if it was a parts buildup (that would be my guess) or came from whatever arsenal this way, but it had a "straight" handguard slipring, "C MP CHROME BORE" marked barrel, A1 falsh hider with a locking washer (not a peel or crush), an A2 small button forward assist, and the newest style of port door. A1 front site post and rear peep. The barrel nut teeth were not chewed up or marred, so *maybe* the barrel was original or just had been carefully installed... Just thought I would mention this for 'historical' purposes. I figure taht eventually if we get enough info on these uppers maybe we can make a better guess at their origins and/or original configurations. |
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"To surrender Liberty in the name of Safety is to surrender both."
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Dawg180,
Though the upper and barrel are of the same era, the late FA and to a lesser degree the port cover would lead me to believe it was built at a much later date, i.e. a mix master. Not to imply that it isn't a high quality upper that will give good service, just nothing to garner historical data from. Wpns Man |
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That was my take too. |
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"To surrender Liberty in the name of Safety is to surrender both."
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"Patriotism means to stand by the country. It does not mean to stand by the president or any other public official...." Teodore Roosevelt
RIP Uncle Timmy: Gee, Alan Timothy, USA CPL 11B10 198th LIB, KIA 10-17-1969 Quang Tin, South Vietnam |
geezzer,
I was doing some research on these the other day at work. 4T663 is a CAGE (Commercial And Government Entitiy) code used to identify manufacturers. This particular one belonged to a company called Engineering Research Inc. out of Naples Florida. Their CAGE was established in 1982 so they in all likelihood produced spare parts for Depot rebuilds as I've not encountered one as a spare part issued at the Direct Support maintenance level. Being marked CHROME BORE also puts it in that time frame. I called the phone number that was listed and got a company that is occupying their old building. The guy I talked to was familiar with the company listed and said they went out of business in late '88 or early '89 as his company had been there since '89. Hope this helps, Wpns Man |
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Does anyone know if a magnet sticks to an early Armalite gastube (the bend closer to the upper)? Just got one and tried a magnet on it as I've heard SOMETHING about that before (not sure what) and it didnt stick.
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Never seen anything like that. The early PIP M16A1's that were tested in the early 1980's used standard A1 grips.
Great job taking on that topic. Have not got started on it myself.
Gas tubes used on the 601 and 602 were carbon steel and do attract magnets. These tubes were only used for a short while on the 603/604. There is quite a bit of gas tube variation. |
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So does that mean mine was more than likely used on a 603 or 604 and not a 601 or 602? |
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Correct |
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So is that Colt or Armalite made? What year, exactly, did they stop producing the earlier bend gas tubes? |
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Far as I know Colt did not get much in the way of a parts inventory from ArmaLite in that ArmaLite was not really set up to mass produce anything. There are a few updates Colt made to the gas tube. The change to stainless steel happened something in the 65-66 time frame. The bend change happened by 1969. |
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Greetings, great coverage on Colt's USGI history, just wondering why the Navy rifles weren't covered? I'm active duty Navy Securty Forces and have recently fired a Colt M-16A1 lower serial no in the 1,000,000 series and a Colt M-16A2E3 lower serial in the 8,000,000 series. They both were full auto, and had an A2 upper configuraton on it. The A1's lower was marked Colt AR-15 M-16A1. I've got pics for non-believers! help
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Don't have any info on Navy stuff. Please send pictures and I will include that info in the guide.: [email protected] |
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Major update. Added the info posted in the 601, handguard, and buttstock variation threads.
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Any chance on pistol grip variation? I can provide pics of a 601 green painted one, 4 mottled ones (all different degrees of mottling), and an A2
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Thanks a million EKIE for all of the hard work, and taking the time to share it!!!!!
Please keep up the great work! "Capt Richardson" |
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"It takes a remarkable person not just to say a Creed and memorize a Creed, but to live by a Creed." S. Shughart
9-11-01 "All gave some, some gave all", rest in piece Brothers of FDNY |
Minor update with new pictures and info.
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There is also one other variation of A1/E1 rear sight dial.
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For all your Retro AR-15 and AR-10 History, Information, and Parts visit: www.RetroBlackRifle.com
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There are quite a few. I need a camera with a better macro function for those little parts. |
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Thanks to I added the transitional bolt stop.
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Lots of great info in this thread!
As far as bolt/carrier broups, when did they swap to parked instead of chromed? |
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Giraffes were created when Chuck Norris uppercutted a horse.
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http://i4.photobucket.com/albums/y129/NATIONALMATCH/M16Armorer001.jpg
You forgot a few parts to show. M-16 fire components - cool law enforcement armorer shot. CARRIERKEY |
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Chrome was dropped in very early 64 on the SP1, later in the year on the 603, and went all the way into 1965 on the 604's. |
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Did not forget, just don't have the time to put it all up, besides, since this forum has been in place I only remember one question in regards to lower parts. So, here is a sneak peek, top disconnector as used in the 601/602 and the 603/604 until about 1966, bottom as used on the 603/604 from about 1966-1982: BTW, the pictured trigger group set is SAFE/SEMI/AUTO, and the S forge code was used in the 1990's. |
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I have a barrel attached to a M16A1 upper assembly that I picked up this past weekend. It has the MP marking and a 12 near the muzzle. I dont see a "c" or any mention of chrome on it. (Haven't removed the handguards yet) Would this be a 1969 or early 1967 barrel? It also came with the full birdcage flash suppressor with a lock washer.
Brachus |
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66-67 |
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OOOH, I'm sick...
I recently sold an M16 upper with one of the Winchester barrels... |
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كافر
PROUD VETERAN OF OPERATION IRAQI FREEDOM RIP RICKY ALLEN KIEFFER 3/15/05 Baghdad, Iraq Happily drinking the Colt Koolaid since June '07 |
..... |
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Posted By Mr_Happyface:
I'd say it'd be pretty damn irresponsible for you gys to bury yourselves with weapons. The LAST thing we need is armed zombies. THat would take the fun out of the whole thing. |
Unless you got an original....building a 601 or 602 seems like an impossibility with all the variations thru history....wow! I got an NDS 601 lower for my slick side upper....thinking I got a handle on it till I read all this. I didn't have a clue. The variations are staggering. I'll have something that looks way cool but far from original. I guess unless you look at it THIS close or you're an expert, it would be hard to tell the difference from a real 601 and what I'm putting together.
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I have not seen one of those before, but I have not started on fire control parts yet. |
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"Pics or you're a fat chronic masturbating idiot with a personality disorder." ~ Swingset
"The most formidable weapon against errors of every kind is reason." ~ Thomas Paine Post Contains Personal Opinion Only |
The only issue you are going to run into is the selector you mentioned, and the color of the parts. Use a "silent sling", the black one with two buckles. |
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Back on page 1 you show 3 different forward assist buttons. You show the "teardrop" style that was first used on the XM16E1 in 1964 and latter on the M16A1; you show the large, round style that is flat on the side next to the receiver that was used on the M16A2 as late as serial number 6,280,000; and you show the newer small, round forward assist that went into production in the late 1980's and is still being made for use on the M16A4. I would like to know if there was a 4th variation of the button. I recently got several parts in a buy at a gun show and the forward assist button is like none of the three you pictured. It is a large, round style like the second one mentioned above, but it does not have a flat side on it. Any idea what the story is behind this one?
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How a politician stands on the Second Amendment tells you how he or she views you as an individual… as a trustworthy and productive citizen, or as part of an unruly crowd that needs to be lorded over, controlled, supervised, and taken care of.
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It is a USGI replacement part, not something Colt used on rifles. |
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Thank you very much for the info. |
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How a politician stands on the Second Amendment tells you how he or she views you as an individual… as a trustworthy and productive citizen, or as part of an unruly crowd that needs to be lorded over, controlled, supervised, and taken care of.
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Very interesting !!!! thx
I just got myself one of these lower ! 1,000,000-1,999,999 1968-1969 US Property marked Colt's M16A1 the 1 993 XXX to be precise (hidden last 3 number on purpose) Any idea how it ended in Switzerland ? (no alteration on the lower, it's a legal owned full auto M16A1 lower |
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It was probably left behind in Vietnam. Allot of those rifles have shown up on the international market. |
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Ekie, if you ever choose to publish you guides in book form, there is a great self-publishing format that you can use.
Lulu just needs your work in .pdf or Word format and they will handle all printing, publsihing, and sales and even list it on Amazon for you- and you can ste it to sell at the cost of printing, or for whatever markup you want to make. |
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Thanks, I already have a publisher, just no time to work on the book, have not touched it in over 6 months.
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I received a Colt MT6731 last week...a G is stamped by the chamber....any idea on its meaning?
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Ekie,
I own the following M16a1 Colt AR-15. They were purchased from John Stemple on Sept. 1986. These guns were demilled and John remanufactured them. I just had Ross Roggio refinish them. They are marked as follows; Property of U.S.Govt. , M16A1, CAL. 5.56 MM. They are selective fire. Serial Numbers; 958054, 964724, 988841, 989898, 964815 was sold to my cousin in Ohio I do not know who owns it today. Your serial number listing shows that there is no known examples in this range.. usasniper1 |
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I haven't seen this anywhere, so I figured this was the best place. On the M-16A4, do they have the standard feed ramps, or has Colt updated them to the M-4ish style being extended into the upper reciever?
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I love the info here..
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in the serial guide is written that the range 920.000 to 999.999 shows no existing guns. I have two Vietnam war lowers in this serial range..943.000 and 983.000 marked Serial and number and showing full fence 603 style. can send you pic is you send me email
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its maybe one of mine I discovered in Vn in 91 and sold in Germany
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