plunger

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    Gunsmithing Seekins lower & stuck bolt catch plunger - help!

    Hello all, I am building a lower and I somehow have the bolt catch plunger stuck in the receiver. The bolt catch spring is behind the plunger, but it is stuck good. I lubed it up, didn't help and I am now heating the receiver up in my over (225 degrees), but no luck so far. <span...