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Old August 11, 2012, 09:52 AM   #4
PetahW
Senior Member
 
Join Date: September 19, 2008
Posts: 4,679
If you remove the lower link, you should see the cartridge stop "finger" (a small stub) sticking "up" from the inside surface at the front end/edge.
The stop is what is supposed to retain remaining cartridges in the magazine until called for.

Some wear down through use, but new ones sometimes are too low/small because they fall at the very low limit of production tolerances.

I've found it best to repair the existing stop by making it longer/taller.

Some do so via welding a little material on top & dressing down with a file; but I've always just swadged (hammered) mine.

I lay the protrusion on it's side, on a steel block (anvil).

I hit the side (use a steel drift) repeatedly with a HEAVY hammer (measure the original length first, so you'll know when it got longer & by how much).
It's better to make it a bit long, then dress it back down.

The repair consists of extending the "too short" stop by only a few thousandth's of an inch - 1/32" is too much.

If your rifle's lower link is of sintered metal, however, welding would be the way to go.

Here's a pic of a worn sintered link (LH) with a welded/filed repair (RH)



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