I'd vote for Hendershots too, but they have moved to RT 40 (National Turnpike) just outside Hagerstown recently.
link, phone # & address is at bottom, just scroll down.
http://www.hendershots.net/
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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”