I explicitly told him I don't use CMMG triggers. I use the pins and springs. That's it. The pins are tapered and the springs do the job just fine. You don't need LWRC pins and springs. I told him what I used and other options that will work. I don't expect anyone to use my parts list. Most of what that was what I used on a couple of my last builds. If you are up on parts lingo a builders lower parts kit doesn't even come with a FCG. I suggest you read up on that. It just pins springs, bolt catch, take down pins, safty and mag release which I replaced anyway. I an not going to buy a 120 dollar lower parts kit an not use 50% of it. I list multiple parts on most parts and no go options as well. I highly suggest you retain some of what you read. There are literally dozens of decent parts kits that completely fine to use. I have a Shilen 308 barrel and it is crazy accurate I will back that play. It's his build and i expect him to live and learn. You don't get decent at building by using the same stuff every time. You have make some mistakes here and there to be able to make educated decisions on the next build. One thing I don't recommend is order everything from PSA Freedom line and expect a quality build. You can't count on two hands and maybe a foot the quality rifle Manf. on the market that offer very good parts to choose from. I don't always use the same parts. I like Daniel Defense, Wilson Combat, Seekins, Rainier Arms, Battle arm dev., LWRC and a host of other suppliers that will come together to make a fine rifle. The meat and potatoes of a good build is the barrel, BCG and the trigger. I you don't like a adj. unit you have to adj. then put a drop in unit. The outside it fluff. The pins and springs are probably made by the same people anyway. The market won't bare 15 manf. of those parts. Especially now. You don't need KAK pins and springs. The thought of that just chaps my ass. Honestly some of you people are ridiculous and jump at the opportunity to put someone down and don't even take in the info.
