must do mods......
while many shoot just fine with the stocks they come in..... in the long run replacing to something a lil sturdier than the "chu wood" is recommended for the accuracy seekers.
while i'm NOT a fan of the new plastic chinese stocks, they are an improvement. However, most need to be adjusted at the ferule end to do away with any forward gas band contact.
next up on my list is a complete check to ensure barrel is indexed correctly, then we check that the flash hider is correctly machined and true to the barrel splines. Then we check the same for the gas assembly. Oprod guide is then checked and locked in place with oprod in alignment with gas piston.
then it's checking the bolt lugs for even wear against the receiver..... then we check headspace. USGI bolts are used to tighten up headspace on match rifles..... as installing a usgi bolt properly will give you headspace in the true .308 range, meaning no more surplus nato or nato spec ammo.
then we look at the rear sights..... many if not most chinese sights are junk, although if yours seem to funtion correctly, leave em be.
simple upgrades...... replacing the stock springs with aftermarket..... such as a springfield M1A or Wolfe M1A spring upgrade pack(order from brownells). next would be replacing the stock oprod spring guide rod with a aftermarket NM version..... Tartan Tactical, Rauch Tactical or marstar(all in canada) or a sadlak nm guide rod (brownells)
for extras...... an extended bolt stop/release and extended mag release are very popular upgrades (again Brownells is your friend)
a decent trigger job by someone who knows what they are doing...... and it's off to the races.