webley senior problem

[ras1]

When i try to cock my senior piston moves a few mm back and then locks solid any ideas whats wrong and how do i fix it .

[lodmoor]

Strangely enough I have had this with over lubrication though under causes it as well. Have a look at the 'foot' at the end of the link and see if it is worn, also there is a small spring inside it meant to keep said 'foot' at the correct angle, could be a problem there.

If all else fails strip it, clean it and reassemble - worked for me before.

[ashf9999]

Indeed, check the short link is not deformed or jaming in the slot in the pistol body.