I Need .300 RSAUM Magazines

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11 years 4 months ago - 11 years 4 months ago #26693 by MeatAxe556
Replied by MeatAxe556 on topic I Need .300 RSAUM Magazines

SOC wrote:

MeatAxe556 wrote: Thanks for the info!

Searching for Gen 2 15-rounders!

Please let me/us know where you find them.



Haven't found any -- I guess they're all going to non-free states.

I assume the 20 rounders will work as long as they aren't loaded past 10 rounds?

Apparently, Pmags can be modified to the Armalite AR10 with a little elbow grease and sand paper, so hopefully those can be made to work with .300 RSAUM as well (scroll down on page 2):

www.ar15.com/forums/t_2_124/185685__ARCH...s_right_.html&page=2

I notice that barfcom lifted my thread on this subject -- apparently it was uncomfortable to one of their site sponsors... :rolleyes:
Last edit: 11 years 4 months ago by MeatAxe556.
The following user(s) said Thank You: jtallen83

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11 years 4 months ago #26694 by faawrenchbndr
Replied by faawrenchbndr on topic I Need .300 RSAUM Magazines
May have been something to do with this thread having no posts in about three years.
Get some mags, modify them and post pics here!

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9 years 11 months ago #43714 by Bear
Replied by Bear on topic I Need .300 RSAUM Magazines
SOC,

Do you know the width of the modified feed lips? My rifle came with a modified 20 round magazine. It feeds 5 rounds just fine, though I ran into a little problem at 7 rounds.

This would just be the distance between vertical front and vertical rear of the feed lips. Mine is probably fairly close. I just received 3 15 round magazines from Armalite.

would the polymer followers work better? I have 5 and 10 round Armalite magazines with smaller lump shapes more like a cartridge that I could move to the 15 round magazines.

With new Timney trigger and more glass, I think this rifle will shoot great groups.

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9 years 11 months ago #43716 by Bear
Replied by Bear on topic I Need .300 RSAUM Magazines
I just received 3 15 round magazines from Armalite. My rifle came with a modified 20 round magazine. The feed lips are .865" from front vertical line to back vertical line. The width between the lips is .555". Can anyone verify if these are the dimensions I need to modify the new magazines to duplicate??

Thanks,
Bear

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9 years 10 months ago #43891 by Bear
Replied by Bear on topic I Need .300 RSAUM Magazines
I received a drawing from Tim at Armalite showing dimensions of feed lips and distance between feed lips. The distance from outside rear of magazine to front vertical surface of feed lips is 1.277" +/- .010". Distance between feed lips is .54". Interesting in the diameter of the RSAUM cartridge is .550" at the back of the case.

Hope this helps the lucky few with AR-10TU rifles. By the way, the Timney trigger is very nice, great company.
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