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M16 30 round magazine intro date

This is a discussion on M16 30 round magazine intro date within the M16 AR15 forums, part of the Rifle Forum category; I had the (now apparently wrong) idea that the 30 round magazine was introduced after the Vietnam war. I have seen an October 1972 photo ...


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Old March 10th, 2005, 05:50 PM   #1
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M16 30 round magazine intro date

I had the (now apparently wrong) idea that the 30 round magazine was introduced after the Vietnam war. I have seen an October 1972 photo of an 87th Infantryman carrying a side fence M16, equipped with an apparent M203 launcher and a 30 round magazine. The other fellows in the patrol also have 30 round mags.
My question is: When were these first released for use?

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Old March 10th, 2005, 07:26 PM   #2
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I don't know the actual date. I can only go by my experience. When I was in Vietnam the Army had recently introduced the XM16E1. There were no 30 round magazines anywhere within the Army system that I could see.

I did see a few 30 round magazines at Bien Hoa Air Base by Air Force personnel, but just a few.

I think it was about 1968 that the 30 round magazines got into the Army system.

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Old March 11th, 2005, 08:48 PM   #3
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:D I never saw any 30 Round Magazines in Viet Nam 68-69! :!:

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Old March 12th, 2005, 09:39 AM   #4
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Check out the book "The Black Rifle" by Collector Grade. The info's in there.

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Old March 12th, 2005, 10:05 AM   #5
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There is a FAQ, on M16 Magazines that includes a history on production and also lists the various manufacturers. It has a section on 20 rndrs, as well as the 30 rndrs. Try clicking below

http://magfaq.tripod.com/mags1.htm#2

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Old March 12th, 2005, 11:08 AM   #6
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We were issued 30 round magazines with the XM177E1 and XM177E2 submachine guns. To my knowledge they were unique to those weapons and a limited production item. This would make their production 1968 or earlier.

They were different constuction from later 30 rounders -- and they were unreliable! I had the follower stop "following" in one of mine one sunny afternoon when the flowers were in bloom and the birds were chirping. I got off maybe 5 to 10 rounds (on AUTO) before feeding stopped and the inside of my XM177E1 was full of loose cartidges. Luckily the rounds expended did their job but I needed a change of underwear.

I promptly traded all my 30 rounders to the REMFs for the "kool" factor, I wouldn't permit any in my unit.

I still have a distrust for 30 round magazines. Not a rational distrust of course since they're different now, but my go to mags are all USGI 20 rounders.

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Old March 12th, 2005, 11:29 AM   #7
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You must mean "26 rounders", which aren't as good as "18 rounders"!

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Old March 13th, 2005, 10:53 AM   #8
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I first saw 30 round magazines in early 68. One of their problems was they would not fit in the existing pouches. They were in short supply; only one was issued to each man in a line company. I do not remember any particulars as to manufacture or markings.
We (an ordnance maintenance company) received XM177 kits with instructions that they were for the LRRP units, however, officers commandeered most of them. This was probably for the best, as we could not get any of the ones we assemble to function reliably on auto with 20 OR 30 rd. magazines. The colt rep. that gave us a class on assembling these kits to M16s told us that was still a problem. As I understand it, different recoil buffers were developed for the XM177 and that helped, but that was after my time of working on the XM177

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Old March 14th, 2005, 09:59 PM   #9
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The wealth of knowlege on this site is again unmeasurable. Thanks guys for the information! 8)

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Old January 13th, 2015, 06:57 PM   #10
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Tommygun. 30 rounders started appearing mainstream in Viet Nam in 69 or 70. 20s loaded two short were mostly used. The guy you portray with back to back 30s under a 203 tube probably had future problems with his mag release catch.


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Old January 13th, 2015, 07:14 PM   #11
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I have colt 30rd "62667" side stamped from '67.

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Old January 13th, 2015, 08:06 PM   #12
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30 round magazines did not become standard issue until @ 1971. In 1970 Col. Bull Simons wanted 30 round magazines for the Son Tay raid in North Vietnam. He actually had to go through Colt to get them because they were not standard inventory in the army at the time. Although 30 round magazines had been in development and limited use prior to this, there were numerous flaws in the design that led to feeding and malfunction problems; these very early 30 round magazines are a rarity to find today and are referred to by collectors as "fully curved" magazines. I have seen the photo the OP describes from October, 1972, and have also seen numerous other photos dated 1971 and 1972 that show the 30 round magazine in use in the field.

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Old January 13th, 2015, 09:40 PM   #13
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The fully curved pre date '67. Did anyone notice this thread is 10yrs old?

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Old January 13th, 2015, 11:05 PM   #14
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I first remember using them in 1971.



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Old January 13th, 2015, 11:06 PM   #15
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Quote:
Originally Posted by XXXMarine View Post
Did anyone notice this thread is 10yrs old?
Yes.


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