Quote Originally Posted by short round View Post
I use the button head, by putting the threaded part in hand drill & with drill turning, shaping the button head with hand file.
^ this. I've bought some in bulk from Albany County Fasteners (online). A bag of 25 is around $10-12. The head diameter is a little large, but as stated above, chock it in a drill and turn it against a file or a bench grinder wheel. Then turn against sandpaper or emery cloth to smooth.
Buy them long, and get a nut to thread onto them too. Put the nut on the bolt prior to trimming. Then cut to length with a dremel tool and a high speed cutoff wheel. Then unscrew the nut, and it will clean up the threads as you remove it.
It sounds like a lot of trouble but it's really very easy. And if you intend to swap stocks around at all, you'll find you need various lengths of screws. Buy the bag of 25 and buy them longer than you think you'll need.

http://www.albanycountyfasteners.com...el-p/16000.htm