>>64060579>Yes yes, they have gone off in holsters, can we actually do more than continue to spaz out about that? I want to figure out what's actually going wrongThe likely answer with what is going wrong, is that the internals on the SIG are full of tiny parts, with numerous sorings, which makes the SIG internals look closer to a compact clock movement or a lock movement, rather than a traditional old fashioned pistol firing group.
The complexity of this action means mire failure points.
The fairly small springs require less force to overcome the spring pressure, unlike older mechanisms built with sturdier springs.
Then add in the fact that the difference between locked and firing is in many cases fairly small dimensional movement.
The Fire Control Unit for the SIG pistol has its body built from a bent piece of punched sheet metal, in a U shape, but with the top edges flared out.
This is not an inherently bad manufacturing method or material choice, but unlike other firearms that have used the technique, SIG made the grooves in the slide, way wider than the thickness of the sheet metal, and also didnโt precisely make the bend 90 degrees for the bent out edges on the FCU body, and also did not make sure the width of those edges closely matched the width of the grooves in the slide, creating way more vertical and lateral play between the slide and the FCU when mounted in the pistol body.
In the original SIG P250, on which the FCU design was based, the firing mechanism was a hammer mounted in the FCU, rather than a striker unit mounted in the Slide, so this movement between the FCU and slide couldnโt cause the issue it does in a striker fired pistol.
Then there are the MIM made parts, which seem to be off just enough in dimension, that the parts can potentially bind in the presence of dust or dirt, or simply due to a rough surface.
These MIM parts can get wiggled around due to the play in other parts, and not rest.