Retail And Business > The Marcus Magazine Adapter
Duck-bill-less. Take One (pic heavy)
martin08:
Well, my first trial at Duck-bill-less went just so-so. But I am in hopes that a lesson was learned, just what - I don't know.
The gun that I'm using is a Mongrel Yugochibanian, as seen being built in this link.
http://www.sksboards.com/smf/index.php?topic=65022.0
This is a picture of it in its original configuration.
And this is what it looks like today. Yup. It's the same gun.
In order to incorporate anything other than AK mags (no duckbill inlet), I needed to evacuate some material from inside the thumbhole stock. I fashioned a 'ledge' piece out of a piece of 1/8" steel flat stock and fitted it as shown.
I started with a 5 round Zytel detachable, so I wouldn't be losing too much investment. The trial and error duckbill cutting and filing took on this wierd looking shape in the end.
The 'ears' on the internal mag clamping end of the trigger group needed to be shaved about 1/8" for the detachable to slide in unimpeded.
Here are some pics of various stages of assembly.
As you can see, the mag well has a lot of extra space inside at the moment. The duckbilless is still a bit wobbly at the moment, and I am going to attempt to make a frame to fit inside the stock out of an AK mag loader. Still a ways off from that project.
So, now the gun is assembled.
I hand cycled a few rounds outside at the range with success. I loaded up one round and fired. Great! The bolt held open. So I loaded up two, and got the following result.
:cry: :cry: :cry: :cry:
The second round went 'nose up' and caught in the action. Bummer. I'm not sure if it was the angle, because it seemed to fit flush (refer to pic of open action with mag inserted), or it could just be the cheap Zytel doing what it does best, or if the wobble got involved during cycling. But I'm not discouraged yet.
I haven't had the stomach to cut up a Tapco mag just yet. But my gut does tell me that I need to lower the ledge just a tad to help with both proper seating and rotational lock-up. The angle needed to rotate the mag into place is a bit too much as it is right now.
So, lesson learned? Maybe. Fun? Absolutely. Stand by for Duck-bill-less, Take Two.
Cheers!
Martin.
sks winger:
It was lookin good till you got to that last pic Martin, well everything except that classic stock :lol:
1mlt:
Well guys, I now have adapters in stock. Martin, I've already solved that issue. NO jams. You will spend more in time and money trying to fix it than what mine costs ready to rock-n-roll. I understand the need to make it work my friend. So, if you must, plow ahead. I had that desire as well. You need to remove about 1/8" off your adapter tongue. That will allow more clearance for your mag. Then you won't need to cut into the mag body. You can also remove anything on the mag NOT under the tongue. It's just junk. Your stock can't be returned to original can it? Looking good. Let us know how it goes. I'm pretty sure Lollygagger will weigh in also.
Marcus
Lollygagger:
Hmmm?
I think a bit thicker "ledge" (about 1/4") might serve you better.
Also, your ledge appears a little rough on the end & has some angle to it, that I question the worth of regarding function.
Lastly, a little more distance between the ledge & receiver probably would help.
While the zytel 5 rounders are pretty much junk and can be glitchey, is is a reasonable starting point for testing.
Be sure, BE SURE, the top of the mag comes solidly in contact with the underside of the receiver -if it does not, feed problems will take place...the front looked a little low in the pic (hard to tell).
And, be sure the follower can rise fully to the top of the mag & come thru into the receiver. You may have to tweak thay a bit.
As you are learning, the real trick here is in the *fine tune*...otherwise, it is mechanically pretty simple to do.
Keep us informed, ask as you may need & good luck, LG :?
martin08:
--- Quote from: 1mlt on February 13, 2010, 03:38:29 PM ---Well guys, I now have adapters in stock. Martin, I've already solved that issue. NO jams. You will spend more in time and money trying to fix it than what mine costs ready to rock-n-roll. I understand the need to make it work my friend. So, if you must, plow ahead. I had that desire as well. You need to remove about 1/8" off your adapter tongue. That will allow more clearance for your mag. Then you won't need to cut into the mag body. You can also remove anything on the mag NOT under the tongue. It's just junk. Your stock can't be returned to original can it? Looking good. Let us know how it goes. I'm pretty sure Lollygagger will weigh in also.
Marcus
--- End quote ---
I'm probably your best advertising, Marcus. The more problems I have, the better your Magadapter looks! :lol:
And I do appreciate the many offers to fit one of your products into my stock. But hardheadedness is a damn Yankee trait.... or maybe my brain's been frozen in the cold one too many times. I just like to tinker on them myself.
You have a keen eye, too. I had already removed the 1/8" off the tongue, but only after I had cut too deep and opened up a hole in the mag body (I thought I hid that mistake in the picture!). And once I get the "sweet spot" figured out, I'll shape the mags with the excess removed from the bottom of the latching notch.
Haven't gone too far on the stock yet. An original magwell liner could still be employed if I had one.
--- Quote from: Lollygagger on February 13, 2010, 04:16:26 PM ---Hmmm?
I think a bit thicker "ledge" (about 1/4") might serve you better.
Also, your ledge appears a little rough on the end & has some angle to it, that I question the worth of regarding function.
Lastly, a little more distance between the ledge & receiver probably would help.
While the zytel 5 rounders are pretty much junk and can be glitchey, is is a reasonable starting point for testing.
Be sure, BE SURE, the top of the mag comes solidly in contact with the underside of the receiver -if it does not, feed problems will take place...the front looked a little low in the pic (hard to tell).
And, be sure the follower can rise fully to the top of the mag & come thru into the receiver. You may have to tweak thay a bit.
As you are learning, the real trick here is in the *fine tune*...otherwise, it is mechanically pretty simple to do.
Keep us informed, ask as you may need & good luck, LG :?
--- End quote ---
You bet, LG.
The next step is to set the ledge about 1/4" lower and more parallel to the receiver to help with the excessive rotation. The mag that I have in there now is flush against the bottom of the receiver, so my existing nosing problem may very well be the Zytel mag itself. After my metal ledge reconfiguration, I may just have to cut up a Tapco....... oh no!
Then when it does feed, wobble elimination will be the next hurdle. Not out of the woods yet. This has got to be helping your cause, Marcus!
Thanks for the feedback guys!
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