Triggers aren't too good on break barrel air rifles, usually the pull is heavy and annoying. Here's a trick that'll work on most break barrel air rifle with no permanent modifications required. It makes the pull more plush and lighter.
Step 1: Start
Phillips head screw driver
Small flat head screw driver
Alright so to start, remove the action of the rifle from the stock. There will be a couple screws to pull
Step 2: Fix
Remove the trigger from the trigger assembly. You will find a small spring and a pin which is the sear for the trigger, discard the spring and take the pun and put washers over it (look at images) it'll make the sear bigger which will fix the deal.
Step 3: Tips
You will notice a very light trigger pull amd be careful.
Tip: Washers can be found on the two bolts at the front holding the stock to the action
This shouldn't do any damage to your rifle and will hopefully improve your accuracy