[ozzymandus]

Mini-14s were never known for accuracy, even after they put some decent sights on them. I finally ended up with a folder with the later sights, which is fun to shoot, but not very accurate. I read they have made some changes for accuracy, but haven’t shot a late one.

[Jed Eckert]

Mini-14s were never known for accuracy, even after they put some decent sights on them...

Part of the problem was the skinny barrel on the old ones. Not very rigid so it would vibrate like crazy and throw your shots off. I found I could improve accuracy by just adding a flash suppressor.

Then someone came out with the Accu-Strut which stiffens the barrel even more. Gives it an M-14 look:
This one isn't mine but you get the idea:

The newer ones have a heavier barrel which should help. Haven't shot a new one either.