having seen reproduction early type butts for sale in the U.S.iconA. for $120 and up (ok US made parts may add value ) I would hate to think what an original one would fetch, and would be well out of my price range.
My deactivated X8 cost £250, an original L38 hand guard (left side only) cost £10 and an original matching bayonet I picked up for £50 (less the wood grips).
I also have a sectioned X2 E1 magazine ( was given for free "as it no use to anyone") these were used on the X8's converted by the Britishicon into sectioned instructional "armourers" weapons.