troupe Posted January 29, 2018 Share Posted January 29, 2018 Anyone made a 40 round Colt style mag. Base pads are not the answer for me. Thanks Link to comment
Aircooled6racer Posted January 29, 2018 Share Posted January 29, 2018 (edited) Tommy: Like I told you, I have done AR15 mags years ago when I had a Tig welder and there were no base pads or big sticks. I just did this Pakistan made MP5 mag a couple of months ago with my mig welder. Works great but the steel is not the best in it so the welds look a little bad before I cleaned it up. Depending on your mags some of the TF base loads work better on some mags than others. Thanks, Eric Edited January 29, 2018 by Aircooled6racer Link to comment
Norther Posted January 29, 2018 Share Posted January 29, 2018 I’ve been wondering about this too. I don’t know how to tig weld. I’ve been wondering if brazing would work. Link to comment
bwikel Posted January 29, 2018 Share Posted January 29, 2018 You can buy FMK 40 rd. mags and mod them for the mag catch just like you would an uzi mag. Link to comment
troupe Posted January 30, 2018 Author Share Posted January 30, 2018 Any idea where to find a 40 round FMK mag, or a 40 rnd Uzi mag that could be converted for AR carbines Link to comment
Norther Posted January 30, 2018 Share Posted January 30, 2018 (edited) I bought some FMK-3 40 round mags before there were extensions available. I modded one. It locks in fine but is not at all reliable. The feed lips aren’t quite shaped the same as Metalforms. Not giving up yet, but not really a priority right now. Seems like a better deal to buy extensions than to buy those mags to modify. I do have a couple unmodded ones I could spare though. Edited January 30, 2018 by six-gun shooter Link to comment
Norther Posted January 30, 2018 Share Posted January 30, 2018 I got mine from whatacountry.com, but I see they only list 25 rounders now. Link to comment
bwikel Posted January 30, 2018 Share Posted January 30, 2018 Six gun shooter nailed it. Link to comment
Aircooled6racer Posted January 30, 2018 Share Posted January 30, 2018 Hello: I think it would be easier to just get two mags and cut them. Weld them back up and be done. Or get a Taccom coupler and use a 20 round as well as a 32 round mag. Thanks, Eric Link to comment
troupe Posted January 30, 2018 Author Share Posted January 30, 2018 Never thought about Taccom. I will get my mags cut and welded. The FMK's would need to have the mag catch cut or modified. My Brownells work flawless, the orange poly follwers on the ACS mags are not as reliable in mine gun. Link to comment
bwikel Posted January 30, 2018 Share Posted January 30, 2018 The taccom splice works well if you use a roll pin to connect the springs instead of 2 springs separated by a base plate. Link to comment
TRUBL Posted January 30, 2018 Share Posted January 30, 2018 if You can't or won't weld.....the TACCOM splice is the answer, especially with the roll pin trick. Tim Link to comment
troupe Posted January 30, 2018 Author Share Posted January 30, 2018 (edited) A small piece of copper tube and some old fashion solder will work for the spring. I remember back in the old days when I had 28 round Para mags made for 38 SC. Thanks for the input from all. Anymore ideas , keep them coming. Edited January 30, 2018 by troupe Link to comment
StealthyBlagga Posted January 30, 2018 Share Posted January 30, 2018 (edited) I had a bunch of FMK3 40-rounders but sold them all a few months ago. I have one left, and it is modified for the Colt AR15/9 system, but I have already promised it to someone else for their UZI SMG (I will let you know if that deal falls through). UZI mags can also be modified to fit, but genuine UZI 40-rounders are like hens teeth. You could have a couple of UZI 32-rounders welded together (they are pretty inexpensive), though this is a hassle; I did this to make a 62-rounder that runs well, but there are a lot of tricks to doing this right (let me know if you need more guidance). Edited January 30, 2018 by StealthyBlagga Link to comment
troupe Posted January 30, 2018 Author Share Posted January 30, 2018 Thanks for the heads up. If it falls through , let me know. I am already missing the MPX. Link to comment
Norther Posted January 30, 2018 Share Posted January 30, 2018 This thread made me dig out my FMK mag and look at it again. A bit of work on the feed lips to make them like Metalforms, and it’s working! More testing needed but this is very promising. I always like the DIY solution. Link to comment
Bdh821 Posted February 20, 2018 Share Posted February 20, 2018 I think as a tig welder by trade, I'll have to attempt to weld 2 mags together and see how it works. Do people do a full penetration weld while shielding the internal of the mag with argon or just put a big booger on the outside? Link to comment
Aircooled6racer Posted February 20, 2018 Share Posted February 20, 2018 10 hours ago, Bdh821 said: I think as a tig welder by trade, I'll have to attempt to weld 2 mags together and see how it works. Do people do a full penetration weld while shielding the internal of the mag with argon or just put a big booger on the outside? Hello: Not much penetration needed since it makes it harder to cleanup the inside of the tube. As you know clean the weld area up very well and degrease it all. I clamp them with a straight piece of steel as well. Easy project if you have a Tig welder but can be done with a Mig welder using gas. Thanks, Eric Link to comment
BartCarter Posted February 20, 2018 Share Posted February 20, 2018 I am still deciding if I want to do this or not. If I did, I would weld them like SS headers, because they are supposed to be SS. Purge the inside and use little, if any, filler. I'm still trying to just run with what is "stock": Off-the-shelf ammo and stock mags. If I go to slide lock and need to reload, I need to reload. It is what it is. Yes, it will cost me a couple of seconds occasionally, but I get better at reloads. Link to comment
Bdh821 Posted February 21, 2018 Share Posted February 21, 2018 I'm gonna purge the mag when welding. I gotta fill my bottle so idk when this will happen. I figure if I fully penetrate fuse weld them together, it'll be perfect. Especially since the mags are supposedly stainless steel. They're prob shit grade SS tho so I'd imagine they'll have porosity. Link to comment
troupe Posted February 21, 2018 Author Share Posted February 21, 2018 I am going to pick up my longer welded mag tomorrow. May need to get a longer spring. Any spring options out there. Link to comment
bwikel Posted February 21, 2018 Share Posted February 21, 2018 Use 2 springs with a roll pin to connect them. Link to comment
troupe Posted February 21, 2018 Author Share Posted February 21, 2018 Any idea what size roll pin ? Great idea. Link to comment
Aircooled6racer Posted February 21, 2018 Share Posted February 21, 2018 1 minute ago, troupe said: Any idea what size roll pin ? Great idea. Tommy: I think a 3/32" split pin would work well about 3/4" long. Thanks, Eric Link to comment
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