Ok so I found a good hospitol to operate on the Surgeon 581 and add a 3 position safety shroud. Someone needs to school me up on something I am really confused about here. On their website High Tech Customs - Precision Built Custom Rifles
you have the option of a 3-Position Safety $300 or a Locking 3-Position Safety $350...
Can someone with more experience with this explain to me the difference betweeen these two?