The big conservation outfits (DU, PF, RGS, etc) regularly supply their chapters with guns for their banquets. So the answer is yes . . . but individual chapters also acquire guns to auction or raffle from local sources. Works best if someone in the chapter has an FFL, can handle the paperwork, make the phone call etc at the banquet so auction/raffle winners can take their guns home. My old RGS chapter acquired guns locally, and the store in question provided someone to take care of all of that for us. Worked quite well.
That may be seen as a violation and not legal,as the 4473 would need to be filled out at the licensee's business premise,unless its is a "qualified" event like a gun show so you would want to be sure the ATF blesses it
https://www.atf.gov/firearms/qa/if-licen...e-sales-be-madeIf a licensed auctioneer is making sales of firearms, where may those sales be made?
In a consignment auction
firearms may be displayed at an auction site away from the auctioneers licensed premises and sales of the firearms can be agreed upon at that location, but the firearms must be returned to the auctioneers licensed premises prior to transfer. The simultaneous sale and delivery of the auctioned firearms away from the licensed premises would violate the law, i.e., engaging in business at an unlicensed location.However, if the auctioneer is assisting an estate in disposing of firearms, the estate is the seller of the firearms and the estate is in control and possession of the firearms. In this situation, the firearms may be sold by the estate at the auction site.
[18 U.S.C. 923(a); 27 CFR 478.50]