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MCX and aftermarket triggers

This is a discussion on MCX and aftermarket triggers within the SIG Sauer Rifles forums, part of the SIG Sauer Forum category; I have to share my SIG MCX saga to date. Let me summarize by stating that I sure do wish I had ignored the BCG ...

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Old 05-11-2017, 07:26 AM   #16
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I have to share my SIG MCX saga to date. Let me summarize by stating that I sure do wish I had ignored the BCG recall and kept the original which was giving me no problems whatsoever.

When I called SIG about the recall, I told them I had an SSA-E trigger in my rifle and they asked me to send the entire rifle in, which I saw as unnecessary. Ultimately, if they could have better explained what was needed to make a Geissele trigger work, sending it would have been unnecessary.

RDA426 mentions in the original post in this thread "Talked to Sig Customer Service rep and they if I got a Geissele they could send an additional part to make it work." This is correct. SIG actually sent me the part with my replacement BCG, but sent no explanation as to what it was or why they sent it. The replacement BCG was set up to run the factory SIG trigger. The part (I'm not sure of the actual name) kind of looks like it would belong with the trigger group when in fact it belongs in the BCG - in interfaces with the hammer. Not knowing what it was, I set it aside, reinstalled my SSA-E and tried to use it. The rifle would appear to be functioning properly during dry fire, but would result in "click no bang" on the range, though you could see a clear impression on the ejected round made by the firing pin. I thought I had somehow reinstalled the trigger incorrectly.

It wasn't until I found a YouTube video of a guy who explained what the part was and how to swap the part out on the replacement BCG. Apparently you CAN order your replacement BCG with this part already installed - I wasn't given that option. Anyway, I plan to go to the range this weekend for yet another test to see if it works.
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