Ive seen 4 paratroopers and they are all a bit different in regards to screw sizes,screw positioning,etc. This guide should do for all bar the one with the Gamo type slot in trigger unit (think late Bsa Meteor, CF20 etc). It should also do for the repeater.
Remove rearsight and then all plastic panels and put somewhere safe. Undo the two small scews at the fore end underside of frame. Undo the small keeper screw (if it has one) that locates on big screw at rear of cylinder/frame. Remove large screw. Action should now lift out. If you want to play with the trigger,there is usually one posidrive screw at rear under side of frame and one visable through hole in trigger guard. If you undo these then the trigger unit should lift from frame. Ive not stripped one of these right down but there seems little to go wrong other than a sear wearing or its spring breaking. If this is the case then knock out the pin and replace the spring and locate it on the little tang on the LHS of the housing. I will assume you will just clean and lube it and place back in the frame. If you want to play with the adjuster screws (front and back of the 3 together behind trigger, middle one is the lock screw that needs loosening before adjustment as it pushes on a small spring clip against the other two screws) GO TO NEXT POST.