RangerSniperPete - What you see in the pic is the latest version of the butt stock. This has a larger bolt handle opening than the original. Some of the customers who have original chassis with the original version of butt stock have had issues if they cut the bolt handle slightly shorter when installing the oversized knob (again with the original version - not the versions marked 102 on the lower portion of the buttstock frame).What happened in the past is that by shortening the handle raised the bolt knob into the clearance area of the opening and the bolt knob made contact with the top of the clearance opening. It all depends on how the handle is modified in the end.
Yes, that is you answer. Please feel free to contact me directly and I an clear up any questions you may have.