Send it to the gunsmith?? What for? If it is all there, and in working condition, just strip it down and clean it up with a good bore solvent. I would certainly clean it up, and then take it to the range and shoot it with sevral different loads using 150-180 grain bullets to see how it performs. These rifles are generally NOT long range target guns, but they are plenty good enough for woods hunting of deer and larger game out to 250 or maybe even 300 yards, if you got an accurate one. Accuracy seems to vary a lot with the Remington semi-autos. But it's worth testing!