ESP frame mod I've not seen before.

[scottieb]

Has anyone seen this before? Factory or custom?

The rear of the frame has a hole and in it is a magnet. The hole does not go all the way through the frame. The hole is threaded (unsure how deep) and a flat blade set screw or plug is fitted. The magnet is fixed with an adhesive of some kind and does not come out.

I've not yet installed a board and tested this one. However, at rest the magnet holds the clapper plunger to the rear.

I'm curious what the purpose/function of this mod could be.

[Trbo323]

Factory. Most of the time that's so you can set the height of the sear. Think of it like a lug adjustment in a cocker. Yours does seem a little weird in that it has that magnet but I suspect that's just so the clapper will return to it's ready position after firing

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[scottieb]

Factory. Most of the time that's so you can set the height of the sear. Think of it like a lug adjustment in a cocker. Yours does seem a little weird in that it has that magnet but I suspect that's just so the clapper will return to it's ready position after firing

I get the lug adjustment thing but notice the pic of the inside of the frame. There is no hole. Nothing to mechanically push the clapper plunger forward.

[Trbo323]

Yeah in your case I'm betting it's just to reset the clapper. Does the clapper have a spring in it at all? I'm wondering if this is an early frame and they switched to the spring after realizing it was a cheaper option. Then to nothing as they realized you don't need to reset the clapper as the sear spring will do that for you

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[Tarsun2]

ill agree with trbo.
the clapper usually uses the sear spring pressure to return.
looks like a bit of red loctite on the threads too. so was most likely for manufacturing and then no need to ever remove the plug.

[Ecapnation]

Early esp frames... Specifically the plastic ones had this.

Not sure what the intent was but eventually it was phased out

[scottieb]

Thank you for the info everyone.