I’ve been using Lancer mags for practice anad training and have yet to encounter a magazine-related issue with them. FWIW.
I initially bought one to try out and since have bought several more in both 20’s and 30’s. They work just fine and I like the looks and especially the rubber bumper bottom.
I think if you read previous Lancer threads, you will see lots of people running them without issue etc in trainings. While most of my mags are PMAGs, my Lancers are in my GTG go-to pile as well. I have not tried a 20 but I recently ordered a single 20R one to try out.
The reason they “feel” flimsy is that they are made of a different sort of polymer than standard polymer type mags (PMAG and ARC). I am not a plastics person but they seem to be made of a polycarbonate plastic which is why they are strong yet light and see-through.
Several people I have spoken with recently (some sharp cookies in the bunch) seem to think that the “flimsiness” - or perhaps better stated their ability to flex as much as they do actually contributes to their durability.
So you have some, they have worked for you with no issues… but you don’t like them and don’t recommend them?
Sounds like you are making the argument for USGIs… 
I have 4 that I’ve ran through a couple of classes. I have had a couple of malfunctions that were so weird that I wasn’t even sure how that was possible and decided it was my error somehow. Then I read about same issue on another forum; so far that is the only report (besides mine). The malfunction was FTS - failure to strip (and chamber) round from the mag. I am still not sure how that was possible, however, I’ll probably won’t get any more Lancers. Also, they don’t work well with SCAR - for those who own one it might be important.
I’ve got 4 of them, but I prefer the windowed Pmags.
Semper Fi,
-Paul
We’ve been T&Eing them at one of our training facilities. We give 3 of the Lancers to each student, with an average class of 15 students. Terrain is primarily gravel, with grass making up the longer shooting positions, but that’s usually from prone. Kneeling and standing shooting positions are on the gravel and the mags have impacted the ground from those two positions multiple times over the course of a week for the last 3 months or so. They are holding up well.
No problems with them whatsoever. I actually prefer Lancer L5’s to Pmags (heresy, I know)
I love my Lancer mags but don’t like the fact that they don’t fit some M4 mag pouches with kydex inserts because of the magwell stop profile and they don’t fit my MSAR E4. The ones I currently own are over a year old (mixture of green and black follower versions) and I haven’t seen if the current 30rd mag has the lower-profile magwell stop revision that is incorporated in their 20rd. mag. Otherwise they run fine and I love the steel lips on them. I don’t plan of soaking them in DEET anytime soon…
They fit tight in the SCAR 16s but functioned fine…
Have you done speed reloads with your SCAR and Lancers? I can’t drop bolt forwards using bolt catch/release button; I know others have had the same problem.
Socom Tan USGI Brownells mags are $8.99 each. It’s hard for me to justify buying anything other than those.
The SCAR belonged to a fellow LEO and was already charged and ready to go when I shot it with a full mag. The SCAR functioned without a hitch and the mag did seem tight in the magwell when I pulled it out so I would have to ask my friend if he had any issues with the bolt release with the Lancer or if he loaded the gun via pulling the CH. The owner had the factory FDE painted USGI mag and a FDE PMAG with his SCAR but the Lancer belonged to someone else from the shoot.
There was a short time a little while back where NHMTGs were $7.49 apiece new…
Odd that the best AR mag out there was the cheapest. I’ve finally come to the conclusion that I have more mags for the AR than I could wear out in my lifetime.
But I still would have bought some NHMTGs at that price!!!
If I find any P-Mags for $10 I am going to buy .Till then i’ll stick with $7 GI.