Dealer for parts for Airy brad nailer ATK 0250S

You just need an O-ring kit. It is letting air past the trigger and valve.

https://www.google.com/search?q=mfbn125+brad+nailer+o-ring+kit

Parts Schematic

https://www.google.com/search?q=mfbn125+brad+nailer+parts+diagram

Leak Troubleshooting

https://www.google.com/search?q=mfbn125+brad+nailer+air+leaks+past+trigger

...

ask maker for the parts list
pick a part and ask them for it.
same answer for any machine or tool.
ask them.
we sell no parts here.

Go back to the dealer and ask for help if its a problem with the receipt is always within 8 days Exchange possibility if something does not normally functioned.
This must not be a problem.

I have o'rings , but no hard parts.

Stanley Bostitch has been sold to Dewalt. The link below has all the information and parts for your gun. Good luck with your projects.

http://servicenet.dewalt.com/

Most nail guns are labeled with the longest nail/brad they can shoot but are capable of shooting shorter nails/brads. There should be a data sticker on the gun, usually on the magazine rail, or at least in the manual that tells you what pressure to operate the gun at, what guage brads the gun can shoot and the size of brads from shortest to longest it can handle.

check your hex wrenches they could be standard when they need to be metric.

ereplacementparts.com. see if they have a schematic for this gun. Good luck sound like a head cap seal.

You should be able to find a local Dewalt/Black and Decker service/repair shop and they will be able to sell you all the parts you need, I would recommend getting a full upper rebuild kit and replacing everything, while you have it open already

Airy no longer has a home base in the USA. E-bey might be your best option