The non hanguard bolt is part #09127-06018 M6x110 and has to go through the handguard and an extra spacer, so I guess 130mm-140mm would be about right.
The bolts are not listed as separate parts as they come with the handguards as a kit.
You are looking for an unusually long countersunk M6 bolt. Try an industrial nut and bolt warehouse.
The bolts are not listed as separate parts as they come with the handguards as a kit.
You are looking for an unusually long countersunk M6 bolt. Try an industrial nut and bolt warehouse.