The best thing you can do is to try the piston without the main spring or guide in . If it is not latching and holding (when you try to push it forward with a rod or similar), then try adjusting the trigger adjusting screw about 1/4 turn at a time. If it then latches can holds ok, try replacing the guide and cylinder pin, just to check that the guide is not stopping the piston moving back far enough to latch.Originally Posted by stevegv8
I have a Meteor S Mk3 that is a 3rd gun of mine with latching issuesthat I was going to break for parts but thought I'd just see if I can solve it (this is the one in another post where I fitted a Parker rimfire silencer for fun)
however before I go very far is this amount of float? correct at the piston head, gap must be about 2-3mm at a guess.
As for the latching up the profile of the sear and the piston notch seem fine, might be a trigger install issue? spring fitting does seem fiddly.
https://imgur.com/gallery/i4QwFGu
Also the TG serial suggests Mk 4 (or 3 as an S which it is) but has a Mk 5 articulated cocking link, no matter just wondered why but of the years things get altered of course.
Regarding the piston head, they are a bit hit and miss as to how well they fit. Yours looks well worn. You may be able to use a tap washer with the hole opened out , but they generally need a placky milk bottle shim in as well. Sometimes you can get a plain steel washer in. Someone made me some thick leather buffer washers that were pretty good as well.
As Mick has said -------the stock for the one piece cocking will have the long slot and the one for the articulated one will have the short slot and the bit of rubbing material stapled in the stock. The articulated cocking lever wont worn in the long slot stock.
Please let us know how you get on.
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