01-20-2015, 05:08 PM
I wasn't sure where to post this, but if you're interested in building a pistol with thoughts of shouldering it with a Sig Brace on it, this is a good read.
http://www.m4carbine.net/showthread.php?...By-The-ATF
http://www.m4carbine.net/showthread.php?...By-The-ATF

