Alright, not to sound all important and stuff, but I hope you didn't break off those tabs.
I have been using G36s for 5 years now, and have taken quite some time to figure out how to get the unwieldy mags nice and secure without worrying about snagging.
Well, there are multiple options. The general rule of thumb is, a double M16 style magpouch holds one G36 magazine, while a triple M16 style mag pouch holds two LINKED G36 mags. This doesn't always work, as not all pouches are made equal. TT makes great G36-specific pouches, which I use on rigs other than my authentic German gear. If you don't want Flecktarn (or the desire to spend the money on MOLLE capable IdZ pouches or the obsolete Link Webbing), there are the options above. But I recommend you get used to linking your mags. Its a lot more efficient than you might otherwise think, especially in a proper G36 mag pouch like the TT, designed not to get snagged. The TT can also hold 2 G36 mags unlinked, but they get caught on each out as you could assume. Still, don't chop those nubs and holds off.
A simple, elegant solution is to get some cloth tape, and tape over the nubs. This will let them come out without snagging on the other magazine. Not as smoothly as two AR magazines of course, but you can always remove the tape to regain linkability. This also works great for single mag pouches, as non-G36 specific stuff usually can snag on that thing due to the internal material. Electrical tape can work too, but has a lot more friction than the cloth tapes. I have tried black hockey cloth tape (NOT HOCKEY STICK TAPE, THAT'S HIGH FRICTION) and it worked great. I still prefer linked though, because its a lot easier having "one" mag pulled worth two reloads.
Also, for an alternative, M14 Open Top mag pouches will fit G36 magazines in them well. Taping over the top lugs are recommended for this setup as well. Some m14 ones are too tight though, but most will fit a G36 mag.
http://www.tacticaltailor.com/g36doublemagpouch.aspxMy MAV setup:
Four TT G36 pouches, they can be height adjusted and have depth cinched down with the retainer bungee to fit a single nicely, or use practically any other magazine, thus diversifying your loadout for G36 mags, M16 mags, G3/M14, AK, anything really. Then on the right (left side wearing) I have a Condor double M14 open top shingle (with a 40mm pouch on top), for quick access to single magazines.
EDIT: The M16 conversion magwells will get the job done, but I am a G36 purist and will never vouch for them
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