Table: ar - 15 variants
[['colt model no', 'diemaco model', 'stock', 'fire control', 'rear sight', 'forward assist', 'barrel length', 'barrel profile', 'barrel twist', 'hand guards', 'bayonet lug', 'muzzle device'], ['715', 'c7', 'a2', 's - 1 - f', 'a1', 'yes', '20 in', 'a2', '1:7', 'ribbed', 'yes', 'a2'], ['n / a', 'c7ft', 'a2', 's - 1 - f', 'weaver', 'yes', '20 in', 'a2', '1:7', 'ribbed', 'yes', 'a2'], ['n / a', 'c7a2', 'canadian 3rd generation', 's - 1 - f', 'weaver', 'yes', '20 in', 'a2', '1:7', 'ribbed', 'yes', 'a2'], ['750', 'colt / diemaco lmg / lsw', 'a2', 's - f', 'a2', 'yes', '20 in', 'hbar', '1:7', 'square lmg', 'no', 'a2'], ['n / a', 'lsw', 'a2', 's - f', 'weaver', 'yes', '20 in', 'hbar', '1:7', 'square lmg', 'no', 'a2'], ['725', 'c8', '3rd generation', 's - 1 - f', 'a1', 'yes', '14.5 in', 'a1', '1:7', 'short ribbed', 'yes', 'a2'], ['n / a', 'c8ft', 'canadian 3rd generation', 's - 1 - f', 'weaver', 'yes', '14.5 in', 'a1', '1:7', 'short ribbed', 'yes', 'a2'], ['n / a', 'c8fthb', 'canadian 3rd generation', 's - 1 - f', 'weaver', 'yes', '14.5 in', 'a2', '1:7', 'short ribbed', 'yes', 'a2'], ['n / a', 'sfw', 'canadian 3rd generation', 's - 1 - f', 'weaver', 'yes', '16 in', 'sfw', '1:7', 'short ribbed', 'yes', 'a2'], ['n / a', 'c8cqb', 'canadian 3rd generation', 's - 1 - f', 'weaver', 'yes', '10 in', 'a2', '1:7', 'short ribbed', 'yes', 'a2']]
Statement: only 2 Ar - 15 Variant have a S - F Fire Control
Statement: most Ar - 15 Variant are Short Ribbed
Statement: the shortest Barrel Length is 10in
Statement: the most Stock for the Ar - 15 Variant is the Canadian 3rd Generation
Statement: most Ar - 15 Variant are Weaver Rear sighted