'GAL' prefix means it is an ORF Manufactured (Ohio Rapid Fire) receiver.
'GLN' prefix means it is a Caspian receiver.
The 'F' stamp means it has been modified with a spring loaded firing pin.
Does your rifle shoot alright? If so, then you have a good one and consider yourself lucky my brother. If not- check out UziTalk, there's a couple guys there that are wizards on these things and can hook you up righteously.
(edited for speeling)
Thanks. I have yet to purchase one. It's kind of a back burner thought due to all the negative reviews of the Century Golanis. Henderson Defense claims to have some "certified" models for sale. I may check one out.
the certified henderson golani is still a century arms rifle. tenngalil told me to run 3-500 rounds through mine and if i have no issues its a good one. supposedly they arent as bad all around as a few years back. but henderson's 579.00$ tag isnt bad either so its up to you. the construction on these battle rifles really are the best design,if big if the rifle you have is assembled and milled well..
it must be in luck of the pic, i have a GLN receiver.i read so many ups and downs but mine is junk,this thing bearly cycles and jams every 3rd round,half the time it cannot snatch the case due to it being so stuck in the barrel.i have used several grades of quality ammo,it will not take wolf