User Panel
User Panel
User Panel
TN, USA
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Posted: 4/20/2023 10:18:48 PM EDT
Per title, anyone know of a mag block to use with standard AR lower that will support the BRN-9 upper and MP5 mags?
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USA
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Posted: 4/21/2023 6:30:35 PM EDT
[#1]
MP5 magazines don’t fit in a standard AR magazine well… get to the feed-lips and stops.
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IA, USA
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Posted: 4/22/2023 10:34:17 AM EDT
[#2]
I think both the upper and lower have to be machined differently to take MP5 mags. Based on Brownell's description of the BRN-9, it sounds like it's had that machining done, and so it would theoretically work on something like the New Frontier C-5 lower. But that's just taking a semi-WAG...
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Posted: 4/22/2023 1:00:20 PM EDT
[#3]
Quote HistoryOriginally Posted By XDm525Forty: I think both the upper and lower have to be machined differently to take MP5 mags. Based on Brownell's description of the BRN-9, it sounds like it's had that machining done, and so it would theoretically work on something like the New Frontier C-5 lower. But that's just taking a semi-WAG... Works on the C-5 and the upcoming G-5 just fine. |
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TN, USA
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Posted: 5/3/2023 11:35:44 AM EDT
[#4]
Thanks folks, my web searching hadn't turned anything up but thought I'd ask.
For now I am trying out the Endomag inserts in PMAGs and running a traditional lower. Not many rounds through it yet and not sold yet on the polymer 'ejector' of the inserts BUT ran great so far. |
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TX, USA
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Posted: 5/17/2023 9:58:05 PM EDT
[#5]
MP5 mags are too wide for a standard upper. Walls need machined paper thin so it clears pas the magwell. QC10 guys showed me some years ago at an event and I later confirmed with calipers.
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Posted: 5/27/2023 9:18:19 PM EDT
[#6]
Quote HistoryOriginally Posted By 19Charlie_84: MP5 mags are too wide for a standard upper. Walls need machined paper thin so it clears pas the magwell. QC10 guys showed me some years ago at an event and I later confirmed with calipers. While that's true, they aren't too wide for a BRN-9, it's designed for up to EVO width. |
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