If you plan on ever running 12g on your Stock Class STP Sterling make sure you get the “Heavy” Valve and “Heavy” main spring. They do not come with both HPA and Co2 springs when ordering new. You need to order them separately shipping is pricy from Australia to the US so make sure you get them when you can.
Also make sure when you get them you break them down and clean them good they coat the internals with a vaseline like grease I’m assuming to protect the parts during shipping from Europe to Australia. So you need to wipe that off and lightly oil them before you use it.
I got mine shooting really well on 12g now. Next time I pull it apart I will measure the springs see if we can find them in the US.
Also make sure when you get them you break them down and clean them good they coat the internals with a vaseline like grease I’m assuming to protect the parts during shipping from Europe to Australia. So you need to wipe that off and lightly oil them before you use it.
I got mine shooting really well on 12g now. Next time I pull it apart I will measure the springs see if we can find them in the US.
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