[lyonss]

I purchased a used BT-4 about 6 months ago of Ebay great gun E-trigger/Rip clip. The gun has been running great until I cleaned it! I purched a repeair kit for the gun cleaned and replaced the spring (black) and put a new oring on the bolt also a new dtent. Now it will not cock until air is hooked up as soon as the air is hooked up the bolt comes back and the gun is cocked, but with no air the bolt is foward and will not come back. Any help would be great going to a big game on the 16th.

[Capt'n Crunch]

Are you sure you have the correct o-ring on the bolt? BTW you are talking about the rear bolt correct? The Hammer?

[lyonss]

I used the o-rings supplied in the BT service kit. When I hook up air the hammer comes back and the gun seems to work fine.