Sounds like you already ran the test... If it shoots well, it shoots well, so you're good to go.
People get all wrapped up about the idea of federal or military contracts and what they use or don't; it really doesn't matter. Those contracts often change based on relationships or a newer thing...
I enjoy the challenge of driving with the lights on and further limiting my vision and situational awareness. It's like a self test, the results of which potentially devastating.
I know this is coming in a bit late, but I was looking for some SCAR stuff on here. I have Stryker's lower for the 17 and dig it. Gives the gun a different feel entirely. Buddy showed me the EACH on his and I kind of went all out after that. G trigger makes that thing awesome too