The safety upgrade will replace the bolt sleeve to prevent misassembly of the bolt, which might occur on the affected rifles. The affected rifles bear serial numbers from one of the following series on the receiver: PN00010 through PN87159, LS00001 through LS05150, M000001 through M020422, LS10001 through LS10309, B000001 through B028450. of Japan, is performing a safety upgrade on all Model 1500, 15LS series rifles manufactured between 19.

IMPORTANT SAFETY NOTICE MODEL 1500, 15LS SERIES RIFLES BY HOWA MACHINERY LTD.