Yes it can there is a pin that is moved from one side of the cocking slot in the striker body to the other.
http://www.gunspares.co.uk/products/24238/S400
Part number DP056
Help. Technical question for S400f
Re: Help. Technical question for S400f
Beware, that innocuous looking wee pin can be a pig to remove. Get some heat on it and some needle nose pliers. It goes back in a lot easier than it comes out! 

AA s410K .177
BSA R10 .177 Super carbine. (Blacky)

BSA R10 .177 Super carbine. (Blacky)

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