Issue T48 bayonets proved to be either (1) elusive and (2) hideously expensive. Solution: convert a plastic grip Type A that has been partially "neutered" by the removal of the two prongs welded to the top of the muzzle ring. This modification had pretty well destroyed whatever collector value the bayonet may have had and so it became a candidate for conversion to a "T48"-style bayonet.
T. Mark Graham of Arizona Response Systems took on the task. I sent him the bayonet and a long, 5-slot T48/G-series FAL flash suppressor for fitting purposes. Mark (aka "gun plumber") disassembled the bayonet for refinishing, ground off the remainder of the flash suppressor prongs, opened up the muzzle ring to permit it to slide over the flash suppressor, and did some file work on the bayonet lug slot. He then phosphated (Parkerized) the bayonet parts and the flash suppressor I'd sent.
The finished bayonet fits the flash suppressor like a glove and the compensating mechanism (called "elastique" principle by FN) was fixed during the disassembly and clean-up process prior to refinishing. [The "elastique" principle allows the bayonet to move forward about 3/8-inch forward as the rifle moves back in recoil. This is to prevent point-of-impact shifts by the bullet when the rifle is fired without or with the bayonet attached.]
Here are some photos of the completed replica "T48" FAL bayonet project.
Above: The bayonet scabbard with a South African "Universal" web frog, the T48/G-series FAL flash suppressor, and the modified bayonet.
Above: Close-up of the flash suppressor and modified bayonet. Note the enlarged hole in the muzzle ring to fit the suppressor. The extension used to (1) support the two suppressor prongs welded to the top of the muzzle ring and (2) as a guide as the bayonet moves forward on the barrel upon firing. Now the extension acts as a guide when the bayonet is attached to the suppressor.
Below: Close-up of the bayonet mounted on the flash suppressor. Note that the end of the suppressor projects considerably past the muzzle ring. The "hump" on top of the suppressor is for the indexing washer that locates the suppressor at the 12 o'clock position on the rifle barrel. The bayonet latch moves down to unlock and up to lock. When the rifle moves back in recoil, the bayonet moves forward about 3/8-inch on the suppressor to compensate for any point-of-impact shift by the bullet. The blade of the replica T48 bayonet is longer than the actual T48 bayonet and the grips are plastic and not metal as in the original.