+7 magazine base and it works. I loaded 30 rounds and it worked great. It is now my extra mag.
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it looks good. my only worry would be reliability. however,if it i relyable, then id be all all about it.
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What base is that?
Im hearing good things about it, its just expensive for what it is. Im tempted to test the cheaper FN mag extensions to see if they work. It seems like some of them do
The problem I’ve had with the ones for the ruger are that the nose of the rounds could ‘catch’ on the magazine body where the extension meets. I had that problem with both the f5 mfg (the +5 and +10) and the 3d printed style (although that one seemed better).
The magazines seemed okay but then every once in a while it would catch and fail to feed or even jam. I hope this setup is better, but I’m loathe to trust my life to it.
This one is metal and is done right I believe. I haven’t had any issues
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Eh the f5 ones were metal too. I’m glad you are having a good experience so far though.
Any further reports on these? I saw @Buffman-RANGE posted a short where it seemed to run well, but I really wanna see someone run through like a case without issues.
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well I can not afford to fire a case of ammo these days. But I can tell you I have 120 rounds downrange via this and no issues.
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Yeah I feel you on that.
I’m still running it but ammo supply is an issue 
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They are running a sale on the mag extension at there website with promo code grand_opening.
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Where is the website ? Or you mean eBay?
Ok what website?
It’s their first post so I would be a little cautious about any links they share…
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Ya I couldn’t find anything on google search of excess arms website, eBay always sketches me out . But thanks I’ll be checking em out soon
No they are legit on eBay. That is where I got mine
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Mine is fantastic! Thanks Excess.