
I thought I knew it all, but what is this green button inside my lower right below the takedown pin?
It’s a Noveske N4 5.56 gen 4 10.5 inch pistol.

It’s a Noveske N4 5.56 gen 4 10.5 inch pistol.
Is there a proprietary tool used to install this adapter? I used calipers from flat to flat and came up with 1.375”or 1 3/8” but a crow’s foot wrench will not work with such short flats. Maybe a 6pt socket?
I will soon be purchasing a 6mm arc and I have narrowed it down to these two companies. This will be my first purchase from either and I have some questions for those who have experience.
First my number one criteria is reliability/durability. Will the dang thing always go pow and will it last?
Second how is the accuracy? Will it hit within or under 2moa?
Finally is the 6mm worth the investment over the 5.56?
I don’t need a dmr as my mr762a4 function superbly in that role. What I’m looking for is more stopping power than 556 yet still capable, like AT&T, of reaching out and touching someone. Thanks for the info.