First, thank you for the answers to PMs. Figured I may not be the only new SP5K owner ignorant to the correct terms.
When sending my SP5K in for 3-Lug Barrel and Paddle Swap:
Just send the complete Upper w/o front shroud?
When you say not to send Trigger Group, really hoping you mean the complete Lower Housing w/ Trigger? (No idea how to remove Trigger Group only?). Better put, hoping I don't have to worry about FFL.
Sorry for all the questions, brand new to these type firearms, and obviously a bit ignorant @ the moment on them.