I dont know much of anything about Class 3 licenses, but I found this on the website. 1. THREE completed and signed Form 4s. TWO copies will be sent off to the ATF (they will keep
one copy and send the second copy back with your approval and tax stamp). The remaining ONE
copy will be sent to the CLEO (Chief Law Enforcement Officer) in your city/county.
2. TWO fingerprint cards. These can be completed at your local Sheriff's Office or Police Dept.
3. TWO passport sized photos (2" x 2" inch).
4. ONE check or money order made out to the BATFE in the amount of $200.00 dollars ($5.00 for
AOWs).
You will need the above for EACH NFA item that your purchase, even if you are purchasing multiple firearms.