The quality of the mag body is great, but the followers are not up to GI quality and have many folds. The folds bind on the body of the magazine and result in contact as the follower rides up and down. It appears that some mags will need bending adjustment at the folds to function perfectly. Also the magazine springs are not of GI quality. That said, they are better than another widely available make.
Verified purchase: Yes | Condition: New
When I opened the package, there was a disclaimer stating that these magazines are factory new, they may have stiff springs and may not feed properly, this is not a result of a defective magazine. I have several weapons with several magazines, never in my life have I encountered the problems that I did with these dumpster grade pieces of garbage. These mags are poorly machined and sharp around the edges. The M1 carbine is designed to be a semi automatic weapon. These mags turned mine into a bolt action, for not a single round with these auto fed. No, it's not the weapon, I've owned it for two years, clean it religiously, and my other mags fees just fine. As far as I'm concerned, I didn't underpay for magazines, I overpaid for a couple of doorstops.
Verified purchase: Yes | Condition: New
Great price and fits well. However one of the mags I bought had a loose bottle slide. It still worked but bulged out a little. After lightly tapping the slide, it looked normal but right when I loaded it with ammo, it bulged out again. I gave it a 4 star because I have not yet shot the rifle with this mag and the bulging issue.
Verified purchase: Yes | Condition: New
Only gave 4 stars as I haven't loaded a round in it, I'm using it in a wall hanger, it wouldn't be fair to others to give it 5 stars and have possible feed errors, if I was to guess I'm sure it'd work great, as I've have great luck with ProMag magazines in M1As before.
Verified purchase: Yes | Condition: New
Follow directions on the first use or you may have problems with it. I changed the follower to a bolt hold-open type which does not come with this type of mag.
Verified purchase: Yes | Condition: New
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