Would you email me your plans?
Yes, It just snaps on and off like a regular AK mag. The only machining to be done is to the trunion. It took me 20 min. with a dremel the first time. All you have to do is remove enough for the mag to fit against the magrail, snap the adapter on, check for feeding and then go shoot.
I tried to have it CNC made out of aluminum. The guy went out of business and kept my plans and drawings when he dissappeared. He didn't know what it was for though. It would be much quicker to cut it from aluminum than to weld it.
I've been using it for over a year with no issues. You'd swear the gun came with it.
I would definitely like to see the inside of your gun and the milling/dremeling cuts to the trunion and the way that this adapter is setup when on the gun.
The adapter just snaps on the outside of the receiver covering the magwell and held on by the original magcatch. Here's a pic of it off the gun and a pic of the trunnion, although, I don't think you will be able to tell much from looking at the trunnion as not too much has to be removed, depending on the model. but here you go....
I threw in a pic of how the mag should look when the trunnion is correct.
I just got my adapter in the mail. However, I didn't have any instructions with it. I think I can guess about where to remove material. How much thickness is typically required to be removed? 1/16"? 1/8"? ...
Sorry Mark. They were supposed to be up on a website that isn't up yet either. I have orders from 5 forums and 3 email accounts, trying to keep up with them all is more difficult than you can imagine. Please send me an email at email@example.com and I'll send them to you. They are usually too long for pm boxes. Thanks
Renegadebuck's instructions for the Saiga223/AR15 magazine adapter, can be found at this link. It's a pdf, and you can save a copy to your computer if you like once it's opened.