king cobra
Regular
well, since rule ONE is NEVER POINT THE WEAPON AT ANYTHING YOU DON'T WANT TO DESTROY and since the looking down the barrel from the muzzle is in effect pointing, it doesn't take a genius to see that part of the "procedure " is POORLY WRITTEN- i CHOOSE not to exercise that part and will stick a CLEANING ROD down any barrel i consider as suspect or hold it up to a light
actually rule one is "never put yourself in harm's way unless it'f for profit or benefit of others" but that's a whole other life
thats why they say that looking down the barrel for obstruction is the ONLY exception to the rule.