Armament Technology can re-charge the tritium. I sent my first Elcan I ever purchased and got it replaced.
We are now stocking NEW C79A2-1 Elcan Scopes (Civilian Model name is ELC556), complete with ARD, Tritium beta light illumination, latest Gen IV mount with step washer and A3 marked Tubes, Armalite green rubber armor standard.
These are identical to DND issue, except the base is not engraved C79-A2.
Again, limited stock on these, we only have 50 sight sets available.
IOP pricing available to LE/MIL members(Serving or Retired).
Will have them up on the website tomorrow.
Cheers