This makes things a lot easier as all one has to do is swap out the followers. Just keep a set of USGI followers handy in case you need them. I can also make a set of California followers (10rnd) and just swap them around when needed. That way I only need to pack around one set of mag bodies.
Yes I was directing that to you. The 20 rd mags to 5 rd were very easy also.
-Insert mag into rifle, mark the back of the mag were the mag well and mag meet;
- remove mag base plate, use duct tape to hold spring in place
- insert 5 dummy rds, insert mag back into rifle, bolt closed (VERY IMPORTANT);
- insert 1/4" steel weld rod into back of magazine through the bottom, mark the weld rod
- remove rod and cut to length;
-drill 2 holes into back of mag below where the mag sits in the well;
- insert rod and mark;
- drill rod;
-replace in mag and pop rivet back in place
The magazine then fulfills the gov't requirements for the magazine to be not "easily" reverted.