Table schema:
CREATE TABLE table_name_87 (us_krag_jørgensen_m1892 VARCHAR, norwegian_krag_jørgensen_m1894 VARCHAR)

Question: What is the US Krag-Jørgensen M1892 when the Norwegian Krag-Jørgensen M1894 is 126.8cm?
SQL: SELECT us_krag_jørgensen_m1892 FROM table_name_87 WHERE norwegian_krag_jørgensen_m1894 = "126.8cm"