http://www.atndownload.com/files/units_information/reflex_sights/usd/user_guide/users_guide.pdf
http://www.atndownload.com/files/units_information/reflex_sights/us/user_guide/users_guide.pdf
http://www.atndownload.com/files/units_information/reflex_sights/usdc/user_guide/users_guide.pdf
http://www.atndownload.com/files/units_information/reflex_sights/us/specification_sheet/atn_ultra_sight.pdf
http://www.atndownload.com/files/units_information/reflex_sights/usd/specification_sheet/atn_digital_ultra_sight.pdf
http://www.atndownload.com/files/units_information/reflex_sights/usdc/specification_sheet/atn_compact_digital_ultra_sight.pdf
http://www.atndownload.com/files/units_information/reflex_sights/us/specification_sheet/versions/specification_sheet.pdf
http://www.atndownload.com/files/units_information/reflex_sights/usd/specification_sheet/versions/specification_sheet.pdf
http://www.atndownload.com/files/units_information/reflex_sights/usdc/specification_sheet/versions/specification_sheet.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specteros_3/specification_sheet/specification_sheet_specteros-3-0.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specteros_3_2/specification_sheet/specification_sheet_specteros_3_0.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specterdr5_56c2/specification_sheet/specification_sheet_specterdr.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specteros3_3/specification_sheet/specification_sheet_specteros_3_0.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specteros3_4/specification_sheet/specification_sheet_specteros_3_0.pdf
http://www.atndownload.com/files/units_information/rifle_scopes/elcan_specterdr5_56c1/specification_sheet/specification_sheet_specterdr.pdf