Additional Service: NFA/SBR Engraving$4900 Category: Build Your Own Product ID: 4711 Laser engraving for your Form 1 tax stamp. Required if you plan to register your gun as a Short Barreled Rifle. Additional Service: NFA/SBR Engraving quantity Add to cart Description Description Laser engraving for your Form 1 tax stamp. Required if you plan to register your gun as a Short Barreled Rifle.