Pmags are not "WAY" more durable than aluminum GI mags. Aluminum magazines are very rugged and have served well all around the world for decades. I have never seen one fail completely. I have seen cracked Pmags.
Let me see a 10k+ lb truck run over an aluminum GI mag, then pick it up and fire all the rounds out of it on full auto... (Becides the fact that the mag would be crushed flat and wouldn't be able to even be loaded into the rifle)
I'm not saying a P-Mag or any other mag can't crack or fail. Under normal civilian use, I don't see a P-Mag failing.
You said you've seen a P-Mag crack, but did it fail to work?
You say you've never seen problems with GI mag's, ask your self why there are dozens of different follower's available for GI mags? Could it be because they've had alot of problems over the years with feed problems and follower's sticking?
Pmags are too fat and fail to seat completely sometimes during magazine changes, and some guys avoid them for this reason alone. And I'm not just talking about some Youtube video I saw or webpage I read.
I've heard some of the origional M&P 15's where P-Mag's would work, but I havent seen or heard of any others and definitly nothing built in recent years where P-Mag's didn't work/fit flawlessly.
GI mag's if fully loaded are hard to seat in any AR with the bolt closed, P-Mag's arn't because a 30 round P-mag can actually hold 32 rounds, leaving room for the rounds to compress in the mag if seated under a closed bolt, where a GI 30 round mag only holds 30 rounds and doesn't have enough additional movement to allow easy seating, you have to slam them pretty hard to seat them under a closed bolt.
Aluminum magazines were/are discarded? Nope. They are issued and maintained, and any good soldier keeps an eye on his seven+ magazines just like all the rest of his equipment.
I own and use Pmags as well as other magazines of newer design than the aluminum GI. But all of these newer mags are a solution in search of a problem. Anything from an old GI magazine with half the finish worn off to a brand new SCAR magazine will feed your rifle well. Use whatever magazine you feel confident in.
So you are telling me in a fire fight, a soldier is going to police his empty mags while he's getting shot at?
..and I didn't say they were purposely discarded, like 1 time use. They were designed to be light weight and cheap and durable-enough.
A solution in search of a problem? What are you talking about!?
Problems with GI Mag's (No specific order)
1. Problem; They are GREY - Who wants a Grey mag on their all black rifle? (Remember, we aren’t talking military use here)
2. Problem; They are painted - No-maintenance is preferred by almost every consumer.
3. Problem; They are clunky - Metal on metal
Those are just 3.
GI mags are cheap, why are the majority of manufactures including P-MAG's now with their AR-15's instead of GI mags? It's not to save them money, P-Mag's cost more!
I'm not saying the GI mags are junk. But they are not the best or only solution for AR mags.
But I have my opinion and you have yours. That's what makes this country great.
-Masta