If you look at the NRA standards for modern firearms it does indeed suggest that you steer from any gun that is markedly blemished in some way. Unless you enjoy troubleshooting mechanical devices. Often though, the problem can be fairly inexpensive to repair.
NEW: Not previously sold at retail, in same condition as current factory production.
PERFECT: In New condition in every respect. (Jim's note - in my experience, many collectors & dealers use "As New" to describe this condition).
EXCELLENT: New condition, used but little, no noticeable marring of wood or metal, bluing perfect, (except at muzzle or sharp edges).
VERY GOOD: In perfect working condition, no appreciable wear on working surfaces, no corrosion or pitting, only minor surface dents or scratches.
GOOD: In safe working condition, minor wear on working surfaces, no broken parts, no corrosion or pitting that will interfere with proper functioning.
FAIR: In safe working condition but well worn, perhaps requiring replacement of minor parts or adjustments which should be indicated in advertisement, no rust, but may have corrosion pits which do not render article unsafe or inoperable.
[Remington 870 12GA][
Stoeger Model 3500 12GA][
Savage 116 .30-06][
Savage Model 10 Bull Barrel .223][
Marlin 336SS .30-30][
Marlin 39A .22][Marlin 795 22LR][
Beretta PX4 Storm 9mm][
Ruger MkIII 22LR]
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Terry V Ohio Commentary