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Discussion Starter · #1 ·
I want to start off by saying that you cannot stop me from trying this. I am not a machinist, a gunsmith, or an armorer. I have a dremel, a toolbox given to me by my father when I was 8 or 9, and a trip to Lowes in my future. I've been doing my homework about the AK lower proposed by Magpul, and will be doing my humble best to recreate it by modifying a factory lower. I will be adding one design of my own; one little part that will connect the AK mag release to the button of the original mag release. Im planing to make this part from stainless, because its the right mix of strength and workability, but I'm open to suggestion. I'll be cutting down the mag well, adding pins for the forward AK mag catch, sanding the inner walls of the mag well wider, and of course adding room for my part.
I am well aware that this is ambitious, and I would like to hear any ideas anyone has, especially anyone who has tried something like this before. I'll be picking up my second ACR on monday, and will post pictures with my ideas soon.
 

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Discussion Starter · #4 ·
Thats a really good point bigdog. I've never handled a Galil or their mags but I know they use roughly the same mechanics. This is an even better idea since I do not yet have a 7.62x39 bolt or barrel. Ill be grabbing one of Argonauts bolts soon, and my smith in orlando will probably end up doing the barrel. I will be canibalizing the parts from the barrel assembly on the second ACR for the conversion. So yea, Galil mags will let me start by testing with my OEM bolt and barrel while I wait for the other parts, assuming they are roughly the same dimensions as 7.62 AK mags. Thanks!
 

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I hears an AK lower is coming out soon,i heard this from a guy who knows a guy,whos sister he know at BM.said release date is soon.:p
 

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Discussion Starter · #6 ·
I hears an AK lower is coming out soon,i heard this from a guy who knows a guy,whos sister he know at BM.said release date is soon.:p
HA! I almost took that seriously:p

I've worked up some simple illustrations that show the 'simple' cutting and sanding required.
Lower-Trimming.jpg Lower-Trimming-2.jpg
 

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Also, the steel (ideally) bar that the front of the AK mag can latch on to, or were you thinking of using the front pin?
 

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Discussion Starter · #9 ·
The mag release is of my own design, and when I can manage to create a drawing that does it justice, I will post it. It will be a single piece that catches the rear shelf of an AK mag, and is retracted with the use of the existing mag release button that we already know and love. It will be an internal part, only visible by looking up into the mag well. It will sit in the groove left behind by the removed bolt catch. The catch for the forward shelf of the mag will be a large(ish) pin pushed through the entire lower, much like a roll pin, however I have considered grinding the top of this pin to be a bit flatter to make a more positive catch for the mag, which would require a solid bar of metal to be used. This will be in the top front corner of the mag well, aligned to ensure correct hight of the top rounds in an inserted mag.
Just to clarify, I have not started any fabrication or modification of any parts. I would like to have a solid design before I do something I can't undo. As soon as I make the first move, there will be pictures here.
 

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theres one for sale om the forum also.i wish somebody would make some good mags.
 

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Discussion Starter · #12 ·
Thats my philosophy too, Mike. For now these are just roughish ideas, with no precise math or measurement.
Thank you for pointing those kits out to me.
 

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Discussion Starter · #13 ·
Alright, so I've been thinking it over for a month, and unfortunately I don't believe my mag release part will work. It would have relied too heavily on spring tension to keep the mag in place, meaning that if enough force was applied, or the mag was too heavy, it could drop on its own. Obviously that is a no no. so I've decided to pin a traditional AK mag release in the bolt catch channel, for the sake of reliability. Since the AK platform follows the KISS philosophy, AK mag conversion should should follow suit I suppose.
 

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Discussion Starter · #15 ·
Sorry if I posted this thread prematurely. I wanted to get as much input, and put as much thought into this as I can. I have two ACR's, so I can only try this once, without it costing me a ridiculous amount. I have an Argonauts bolt, and as funds allow I am adding the ejector/extractor parts. I have an Email into Marvin to do a barrel conversion. I sent him my proposed parts list for a 14.5 (or so) pinned 7.62x39 barrel. If/when he says he can do it, I will buy them and send them to him. I want to have a working x39 conversion (bolt/barrel) before I start mod'ing my lower. Obviously this may take some time.

One thing I have noticed that gives me hope, is a certain cutout in the back of the trunnion right above the front of the mag well. It seems to be the perfect spot for the front AK mag catch, as it creates a little ledge when the lower is connected. You can feel it if you stick your finger in the top/front of the mag well. This may be a provision in the design (by Magpul or whoever else) for a future AK mag lower. The top of the lower will actually serve as the forward mag catch, in this case, so I may end up reinforcing it.
 

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Yeah, but is it in the correct position to "latch" the front of the mag, to allow reliable feeding?

Also, is it possible to buy just the polymer lower from BM? I'd go that route in case.
 

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Discussion Starter · #19 ·
I have seen that lower on GB. It's been on for a while. I'll grab it soonish (funds permiting), since that would be the safer route. I figured since I'm using the hardware off my second ACRs barrel to do the x39 barrel, I wouldn't have two functioning 5.56 guns anyway.

And yes, Duc, from all the mock-ups I've done it seems it will hold the front of the mag at the perfect position. The rounds should be at an agreeable hight, and the only movement I can imagine, is the mag rocking slightly forward, less than a quarter of an inch upward at the front mag catch, which will angle the rounds up towards the chamber a bit, which I can't see hindering feeding. This would only be possible when the bolt was open, and would only be likely if the gun was upside down. If such movement did cause reliability problems, I would find a way to secure it. As long as the rear mag catch is secure, the rounds should be kept fairly still, and at a correct hight to allow the bolt to strip rounds consistently.

It all looks good in my head, but I won't know for sure until I try it out.
 

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Git er done'
 
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