G43 +1 & +2 extensions.
+2 experienced some delamination
+1 & +1 extension are printed at slight angle to avoid splitting.
+1 has support material designed in.
Mag7 has been modified, adding some depth to the well and removing some sharp edges.
* modfied slot to hold to mag better, untested **
Rev B should have tighter slot and block to prevent sliding off, please report results if made.
REV C is a few mm deeper to avoid having to crush in the last round.
also made a +2 (8 rnd) extension
The mechanical connection to the mag is tighter, you will have to squeeze past the tabs.