Carbine marksmanship is a matter of mental and manual dexterity. it depends on programming reflexes and takes time. the reflexes of a beginner may be quite good, but they are relatively shallow resulting in inconsistent shot placement. A great deal can be accomplished off the range. “Dry Practice” (without firing live ammunition) can help maintain the fine edge of dexterity necessary to good gun handling. Ten minutes a day will keep a fair edge, even without any actual shooting.
The basic stroke, quick assumption of stabilized positions, magazine changes and pivoting should be practiced at home and at the range. Remember the commands: “Pick your target. Plant your feet. Check your rifle down range and unload.” Always observe exactly the same drill when practicing alone or without supervision.