Likewise, if you purchased a slide some time after purchasing the frame, who's to say you weren't borrowing a slide from the day you bought it? In other words, the statute of limitations clock could've started prior to you purchasing the slide.What does it matter when the parts were purchased? You can put any date of completion. Just because the parts were purchased some time in the past dosent been the firearm was completed. It has a completion date any time you want to put a completion date. Example I have had a Lonewolf Timber wolf frame I purchased on let's say 10/15/2022 and a Glock 23 compensated slide I purchased on 1/3/2023. I purchased the slide parts 1/21/2023 and the barrel on 2/4/2023 now I can say I assembled the parts into a firearm at any date I want. If I want to record the completion of this firearm on 2/2/2024 and put it into the EFA10 system who's to know.
Just put the firearm into the system no one really knows when the finished build was completed.