The term guild gun is questionable, It could be a gun built by the American Custom Gun Guild, one that was auctioned off for a certain year...

But normally the accepted term "Guild Gun", at least in my circle is referring to one of those neat little German rifles in 8x57, 7x57, 9.3x62 etc. that have skinny stocks, egg cheek pieces, perhaps half octogan and half round barrels, butter knife bolt handles and so fourth, that were built by German Guild members, that had a small shop about like my closet, and could make a perfectly round ball out of a square block of steel WITH A FILE!

There are thousands of these nice old guns floating around, most were brought back in some soldiers pack from WW2, and others were shipped in and sold...They are a pretty fair investment and today will cost you about $800 to $2500. and up...

Some companies like JP Sauer made some very nice guild guns or guild type guns and they are referred to as guild guns...

The term has evolved to enclude about any skinny stocked,schnable forend, butterknife bolt gun IMO....and today is used pretty loosly, thus the confusion...