Making New Bushmaster GI AR 15 Magazines Not Suck So much

I recently purchased ten new Bushmaster 30-round GI-style metal AR-15 magazines.

I found one of them to feel sorta "crunchy" and to have a feeding problem in that the follower would hang up about halfway through the magazine.

I popped the mag apart and found that a sloppy/oversized spot weld inside the magazine was catching on the follower and stopping its upward progress.

Out-fucking-standing!  This meant...being finicky and anal about this kinda thing...I would have to completely disassemble all ten mags and inspect them.

I found five out of ten of the mags to have this spot weld problem. 

These are the spot welds and their locations inside the mag.  The welds pictured are not the problem welds.  The problem welds were much larger and more pronounced.

So, I took a long narrow file and knocked down all the spot weld burrs I could find...and reach.

Then, I took a look at all the plastic followers.  I found some minor mold flashing on all of them, and smoothed them down with a hand file.

My last step was to lightly oil the mag springs and the inside walls of the mags themselves.

I slapped all ten mags back together, and worked all of them up and down vigorously until I was tired and satisfied and needed a smoke.

The mags seem smoother now and not crunchy at all.

It's a damn shame Bushmaster couldn't be assed to do this kinda thing before they put these mags on the market. 

Unless I find a metric shit ton of them for almost free, I won't be buying any more Bushmaster mags. 

I guess I'll stick to Magpul.  I haven't had any issues with their shit.

Yet.