Thread:Minja536/@comment-10412586-20140625094114/@comment-30157565-20140629154025

You mean 6mm "steel" BB's? They're basically the same as plastic BB's, but they do more damage and cost more.

Also, some BB gun types use 4.5mm steel BB's, which are SMALLER than a normal 6mm.

And another thing. 4.5mm BB's are NOT sold as plastic BB's. If they were plastic, the projectile would fly out of the barrel, but after a few 50 yards, the BB would slow down and drop. Why? Cause it's plastic! Small plastic BB's have a lower velocity and range. So it needs to be big enough. And 6mm steel BB's would have the same effect. The projectile is too heavy, so the velocity and range are even LOWER that a 4.5mm plastic BB. And on some occasions, the steel BB would fall out of the barrel and do nothing. Only airsoft guns that have rifling in the barrel can support 6mm steel BB's. Why? The rifling keeps it in place and the gas piston and firing pin is BEHIND it. If there was no rifling, the BB would shake around and assumingly fall out. As if it was too small. So the rifling would keep it in place until it's fired. But the BB would have only a low velocity, but nothing effects the range.