FAL GERMAN G1 BLANK FIRING DEVICE ATTACHMENT.....THIS LISTING IS FOR ONE (1) BFD.....I USED SEVERAL IN THE LISTING PHOTO SO YOU MAY SEE ALL SIDES OF THESE BFD  OFFERED ....mid to late, 1950's, blank firing adapter for the German FN-FAL, G1 rifle, that saw service with the Bundesgrenzschutz.These blank firing adapters were used when blank cartridge rounds were used in the rifle.  With blank rounds, there is not enough back-pressure from the powder gasses to cycle the firearm and eject, then feed the next round.  To solve this problem, a blank firing adapter is used when firing blanks.  The adapter replaces the flash suppressor and basically blocks off the end of the barrel.  This allows the gas from the fired blank round to build up enough back pressure to cycle the rifle.  There is a small hole in the end of the blank adapter to allow the excess gas that was not used to cycle the rifle, to escape.these blank adapters were manufactured by Fabrique Nationale (FN) of Belgium, the original manufacturers of the FN-FAL or G1 Rifle, and supplied to Germany with the new-firearm shipments. The early adapters that were made for the BGS are all marked with the "AB-AUF" lettering.  The adapters that were issued later to the Bundeswehr did not have the lettering.