ERE Systems VS GS Designs Swiss arms Stanag adapter

jtempelm

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Hello CGN,
Has anyone had any experience with both the ERE systems and GS designs stanag magwell adapters for the swiss arms rifles?

http://eresystems.com/after-market-rifle-accessories/

http://shop.gsdesigns.ca/AR-Magazine-Adapter-Kit-for-Swiss-Arms-SIG-SG550-55X-AR.htm

Both advertise the same feature. With a modification to the back of the stanag mag, you add removable plastic inserts to the lower of the rifle and you get to run regular ar mags.

Problem is, both are wildly different in price ($245 for ERE and $59.99 for GS) and I cannot find any reviews on the ERE systems one. I want it to work reliably but it does not need to survive the apocalypse or anything, just the odd 3 gun match. Alternatively there is always a genuine swiss arms stanag lower, but that runs around $1900 by itself and the importer I talked to will not bring them in on a rifle for fear of the RCMP slapping a new prohib FRT on it, even though it really is the same rifle.
 
I have had very good experience with the GSdesigns adapter kit. It is simple to use, straight forward and does only require a small notch in the polymer mag. And considering the cost factor, it is the best kit available.

I have shipped that adapter overseas to friends in the Swiss Armed Forces and they have succesfully tested it in full-auto. No issues at all. They run several thousand rounds through those adapter (I supplied over 5 pieces to them) and they were happy.

I love it, I like the idea behind it and I enjoy the low price tag on it. It is not a cheap, crappy product. I cannot speak for the ERE system adapter but I have seen it and it looks fancy. But it costs almost 4.5x as much as the GSdesigns adapter and can basically do the same...
 
I would be cautious if you decide to use this device to modify a LAR or Beowulf mag.

Seeing as you are modifying a 10 round magazine you may be in hot water as there are no Swiss arms mags of that capacity.

Very risky potential issues there I would think. My understanding is that you can modify a rifle to feed from an unmodified mag.... but not the other way around..... But who actually knows until precedent is set.
 
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