Hey guys I'm asking on the tech forum about this because I'm trying to find the better option for the 4-40 set screw for my new gen 2 aero lower for the take down detent. I believe it also had threaded bolt catch pin so where would I get that particular threaded pin? The one for the bolt catch had a long "shaft" and small threaded end. My main question though is which 4-40 set screw would you guys recommend and what specs make it better than the cheaper $.20ers you can get off of eBay and the like?
Also, what dimension? 4-40x1/8? Aero didn't specify (or I had too many blonde moments and glossed over that particular detail).

Any info and especially links would be greatly appreciated. Especially examples of ones you guys have used.

Regards,
Darrin