http://www.atndownload.com/files/s_d_d/reflex_sights/us/documents/us_usd_manual.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usd/documents/atn_us_usd_manual.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usdc/documents/atn_usdc_manual.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/us/documents/atn_ultra_sight_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usd/documents/atn_digital_ultra_sight_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usdc/documents/atn_compact_digital_ultra_sight_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/us/documents/versions/atn_us_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usd/documents/versions/atn_usd_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/reflex_sights/usdc/documents/versions/atn_usdc_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/rifle_scopes/specter_dr_5_56_c1_c2/documents/specterdr_spec_sheet.pdf
http://www.atndownload.com/files/s_d_d/rifle_scopes/specter_os_3_0/documents/specteros_3_0_spec_sheet.pdf