The earlier Mini 14s with the lightweight barrels and crude sights struggle to get groups less than 3" @ 100 yards. Barrel whip and vibration seems to be part of the problem and as the barrel heats up the group size increases.
The current production with a thicker barrel and better sights is a tighter shooter, still not as accurate as an AR but not bad.
A fix for the lightweight barrel issues are to add a barrel support strut and a weight at the muzzle. Better sights help too. I added a Tech sight to the rear.
I did this to mine and turned it from a 9 ring shooter to a 10 ring shooter. My ARs will go the the X ring so the Mini will never be a match rifle but still, it is handy and fun to shoot.
As a straight pull rifle it should be easy to function.
