Just FYI , i called Sig Customer service & was told the mounting screws are a 1/8 Allen.
easy peasy. hope this helps someone else with the same question.

 

Sorry I didn't get you the answer earlier, but just seeing this thread. I found the same thing when I got my fat wrench to torque Romeo's on with. But I already had the correct bit in a different tool set I have for guns, a Wheeler screwdriver kit. The Wheeler number on the bit that fits the Romeo screws is 159-930, which is 1/8", as you said.

 

Battery cover comes loose as well. Anyone know the proper torque for it?

 

Key there is to NOT use the tool the Romeo comes with to access the battery. You'll wreck the tool and/or the battery door. Use a screwdriver bit that fits the slot as closely as possible with no slop.

I don't really know of a torque spec, but I get it pretty snug. I would not call it tight though. When I get my 2 replacement Romeo's on Monday from FedEx, I'll check the torque I set them to once I install the batteries. That'd be a good thing to know anyway.

 

yes i heard from youtube vid. that 10inch lb is the torque for the battery cover on the Romeo 1, i was able to use my fat wrench for that & 10 inch lb was well beyond what i thought was good enough using the supplied tool. i was a bit worried that maybe the youtube vid was incorrect, but feel better now that it was cited here in the forum...thanks guys!!! have a good day!

 

I use this setup, which has an in-line torque limiter at 10#. I find my Wheeler is a little bit cumbersome for the battery door.

 

Thanks guys, was surprised the 10 setting actually made it tighter then the hand tool would get me. Fat tool worked great.