[Catt57]

The "brown" rifle certainly has signs that it was pieced back together at some point. That safety is likely a replacement from a different model rifle. The front sight is not original (or has been modified) And it appears there is some funny business going on with the take down screw as well.

The cocking knobs went through several iterations. I don't have a complete list, but it's also not unusual for different styles to get swapped between rifles as replacement parts, etc.

And what is going on with that stock??

 

[Catt57]

The brown one cycles fine in semi mode.
The greenish one seems to jam while feeding rounds.- consistently.
The back of the round doesn't seem to lift high enough and is stuck between those 2 stamped guide arms

You might read through this tread, lot's of good info there.

Springfield 87A Jam

I've been trying to get this rifle to be reliable for years. My late Uncle gave it to me years ago and it was missing a few parts. I got them at Gun Parts and when I went to shoot it, it went full auto. I then replaced the trigger group and that fixed that. However, it has this jamming problem...

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