❓ PP700S-A: Help! Breech Block Loose – Now It Barks!

[JungleShooter]

❓ PP700S-A: 
Help!  Breech Block Loose – Now It Barks!

That's pretty much it.

After shooting it for a few thousand times this silent pigeon killer started barking, even with a Sumo.

So, I take it that the breech block got loose (tissue flies off).

I'm not the crack mechanic like many of your. I have been able to take apart the barrel and the air tube and the regulator, adjust it, and got it to work again. But I've never been into the breech block – seems more complicated.
What do I need to do to fix the loose breech block?



I'd be very thankful for any help you could give me! (The pigeons will NOT be thankful, I'm afraid).

Matthias

[joedirt199]

Check the tiny set screw on the right side just next to the valve. If it is loose, you can turn the valve a little tighter with a set of lock ring pliers, then tighten down that set screw so the motion of opening and closing the block does not loosen the valve out of the receiver.

[ineedpal]

You can adjust the breech to receiver tolerance by turning the silver stem housing. Also you might want to replace the green o-ring sealing the breech block and the barrel.

[USAFANG6799]

I replaced my breech oring with a 90 duro instead of a 70 an that took care of the oring issue.
I apply silicone lube to it which helps.