Here's how I do it Attachment 36594
Printable View
Here's how I do it Attachment 36594
The trick is to go at it like a 14 year old with a Victoria's Secret catalog, you can do it pretty quickly. The only ones I've ever had a problem with the auto punch is the Magpul ASAP, the size and shape (and it may be a harder metal?) can require a little more finesse, depending where the castle nut staking notches end up.
I used a roll puchase to start mine, then finished with a flathead screwdriver. It move a decent amount of material with 2 hits.
+1 to IG. I'd ensure its to spec before staking. If you have the tools it's free insurance.
A quick smack with a roll pin punch and a hammer and you're set. I'm surprised how many have purchased an auto punch to do this. It takes two seconds and you'll be set.
Definitely follow Iraqgunz advice and double check everything first.
I use this punch. It has a sharp tip so a few light taps will get you started and then a few harder its to take you home.
http://amzn.com/B0006J4QO6
While you are at it, this hammer is the shizzle
http://amzn.com/B0007D2D50
Those auto punches are too finicky to bother.
Agreed center punch and a hammer. I have also found the ASAP plates to require a bit more effort than standard.