After about 1000 rnds, my HP SS + would stop firing. During the firing cycle, at least 1 pellet per magazine would follow the bolt probe rearward, getting stuck in the hammer/trigger area.
I finally discovered that a worn breech O-ring was to blame. After replacing it, flawless cycling resumed.
I finally discovered that a worn breech O-ring was to blame. After replacing it, flawless cycling resumed.
