The BM59 is not a M14, there are major differences though it is closer to the garand. That bayonet is for a BM59. The BM59 E is more like the garand and can use a garand bayonet.OK.......I need a clarification. For a long time, BM-59 has meant a M-1A (M-14) replica/clone (???). The other hardly ever used BM-59 designation has an E behind it. It is a modified Garand. It also has a larger flasher. Just which rifle is this for.?? Your photo gives no indication of the size of the "loop" that slips over the barrel or flasher as the case may be.
I do not have a spare for the BM59E but I will certainly keep my eyes open for you. The one spare I have is for the BM59Toolman,
I am looking for a BM59E bayonet, the one that looks like the one for the Garand and has a 22mm ring, which is, I think, the one in the picture posted in this thread.