The military were apparently not the only ones with bright guns.
The Pennsylvania Gazette
January 13, 1730
.... a Vest lined with Red, his other Cloaths uncertain. They have with them a small new Gun, the Barrel bright, and Stock yellowish.
The South-Carolina GAZETTE
February 12, 1753
CHARLES-TOWN
Lost between Charles-Town and Ashley-ferry in December last, a bright barrel gun, Wilson's make. Bring it to the Printer, and he will give, you a reward.
Frontier Memories, John Dabney Shane interview of a Woman in Cincinnati: "He saw three Indians standing by the fire looking at his gun, which he always kept very bright and he could see it shine by the fire."
Spence