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Posted: 6/8/2010 6:02:15 PM EDT
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I thought this deserved it's own thread separate from the 40 round pmag thread. It seems Magpul is working on a new quad stack magazine. Does anyone have any more details? Timing? Capacity?
Magpul's Quad Stack Magazine Shamelessly Copied from The Firearm Blog:
Magpul has just filed a patent application (#20100126053) for a quad stack AR-15 compatible magazine. The design is quite straight forward. A central partition separates two dual staggered round stacks. Two springs are used, a lower stronger spring and a weaker top spring, which are joined by spring slicer. The magazine has a constant curve geometry. Interestingly, the transition area (16) is asymmetric in order to stagger rounds correctly. The follower is very interesting. Two bails (58a and 58b) are spring loaded. When the follower is pushed against the central partition they part and reveal a hole which allows the follower to descend below the partition. The patent does not reveal what the capacity of the magazine would be. I would expect it would be around 50 rounds. The patent application comes on the heel of the announcement from Izmash that one of the major features of the AK-200 will be a 60 round quad stack magazine. It seems 2010 or 2011 may be the Year of the Quad Stack Mag! A quad stack magazine would be ideal for the M27 IAR. I have no doubt that Magpul will eyeing a lucrative contract with the USMC. UPDATE: Drake at Magpul said to me "Unfortunately I am unable to disclose any other info at this time on the product in question." |
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There will be quite a few of these from different companies coming out over the next year. Some metal, some plastic, some hybrid. This is an extension of the russian design, they are vertical BETA designs, form is defining the design, great for space consolidation, function is defined by the tolerances in mfg. You certainly wouldn't want to funnel any more than 2 rows into 1, imagine like a 4 to 1 making a total of an 8 to 2 quad stack, it would work for fluids but mechanics are a little tougher.
http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Ftalks.guns.ru%2Fforum_light_message%2F51%2F061533.html&sl=ru&tl=en This is the most informative site I have ever seen with hi cap discussion, it is in russian but this translator should help, this is a lite version, If you play with it I am sure you will get the real one but it goes through most of the desigs ever presented in history. I am glad to see these offerings,They evolve the role of the automatic rifle/light machine gun |
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Quoted:
Id like to see it work but I am doubtful A company that made a Sub-Machine Gun had a tri-stack mag and IIRC it jammed a lot, IIRC the Russians tried it too w/ the same result I've never tried one but the idea seems to work according to this vid 
http://www.youtube.com/watch?v=GJM8asnj6JY lets see what magpul can do 
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Quoted:
Id like to see it work but I am doubtful A company that made a Sub-Machine Gun had a tri-stack mag and IIRC it jammed a lot, IIRC the Russians tried it too w/ the same result Don't know about reliability, but the Italian Spectre M4 submachine gun has 50rd, quad stacked, 9mm magazines. |
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Quoted:
C'mon, Drake- throw us a bone, dammit - a little info on this, please? We are not releasing any information on products that may or may not be in the works. We're always looking for new ways to improve on existing products and exploring boundaries of new ideas. Thanks. 
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Quoted:
Quoted:
Id like to see it work but I am doubtful A company that made a Sub-Machine Gun had a tri-stack mag and IIRC it jammed a lot, IIRC the Russians tried it too w/ the same result Don't know about reliability, but the Italian Spectre M4 submachine gun has 50rd, quad stacked, 9mm magazines. So did the Suomi, but it functioned differently than the magpul design. The Russian 74 quad stack looks like it works. |
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Quoted:
Quoted:
Id like to see it work but I am doubtful A company that made a Sub-Machine Gun had a tri-stack mag and IIRC it jammed a lot, IIRC the Russians tried it too w/ the same result Where did you hear that the ak74 quad stack jammed alot? If you go through the archives there was a thread in AK Magazines about the quad stack and a gentleman from Russia actually posted some firsthand pics of them in use and the jam method that occurs. |
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