F/S 5 10/20 Magpul Gen 3 AR-15 mags

[SkiingOnIce]

$15 each (shipping depends on quantity) or all 5 for $65 shipped.

Edit: These are blocked by a mag-body rivet. The baseplate can be removed to clear debris, but the follower is retained by the rivet. Visible on the other side of the mags.

 

[shootemup]

How are these blocked? Rivet in body? Riveted base plate?

 

[SkiingOnIce]

Bump; mags held in by left-side rivet in body