As has been said, lube it well shoot it first to see if you are going to have problems. If it is all AP, you will have a better chance of it working together. If not, it can be diagnosed.
I would take one and put it in my 2010 Challenger, if anyone is offering to get one for me. I'd even drive to Tom's and let him do the engine swap. The drive home would be much faster.
As Paul Harvey used to say, here is the rest of the story. For those of you not old enough, google him.
https://www.thetruthaboutguns.com/2018/11/daniel-zimmerman/atf-suffers-rare-court-loss-in-ohio-short-barrel-rifle-prosecution/
Welcome from Texas.
As 98Z5V said, start a thread to let us know what you have and what you're considering. There are many parts that do not play together with 308ARs. There's no need to order things that are not compatible and have to return them or have something that you can't use.
D&H mags work most of the time as well - too bad they didn't work for you. If you want a magnified optic, I have a primary arms optic on my 7.62x39. I bought a kit from Moriarty (a site sponsor) and put it together. It has not missed a beat.
There is a thread on the Full30 forum about this.
https://forum.full30.com/t/atf-charges-someone-for-an-ar-pistol-with-a-brace-as-an-unregistered-sbr-urges-judge-to-ignore-atf-brace-rulings/7776
Article about the lawsuit
https://blog.princelaw.com/2018/10/28/atf-unhinged-prosecutions-made-up-out-of-whole-cloth-you-might-be-next/
Welcome to the forum.
The trigger should fit just fine with only a few exceptions. What are you putting it in?
This is the only exception I could find.
NOTE: This trigger only works with Small Pin Lower Receivers/.154