FM15 9in 5.56 accuracy?
I'm looking for a bag gun, debating between a 9in FM15 upper to put on an SCO-15 Ambi lower and a Flux P365 Raider. Both are gonna cost me about $500 to get set up from what I've got.
I've heard the short barrel FMs have some accuracy issues. This is for event and executive protection, as a civilian, for an organization and people (myself included) that are facing an uptick in actionable threats (yay politics).
What are we looking at for 100y, 250y and 500y accuracy on the 9in FM15 uppers?