Wooooo found it!!! Here it is written word for word as per the manual.
To aid cleaning, the silencer is fitted with a detachable baffle, which is retained by a single scre, at the rear of the silencer. After removal of the screw, the baffle may be withdrawn by applying a stout pair of pliers to the crossbar in the baffle end, and twisting the baffle as necessary.
then it goes on about cleaning and replacing wool etc....to refitting the baffle to ensure the retaining screw is tightened fully because if the screw falls out the baffle will follow!!
Hope that helps!