Howa Machinery Ltd. of Japan is performing a "safety upgrade" (ie: recall) on all Model 1500, 1550 and 1700LS series rifles manufactured between 1970 and 1993. The affected rifles bear serial numbers from one of the following series on the receiver: PN00010-PN87159, LS00001-LS05150, M000001-M020422, LS10001-LS10309 and B000001-B028450. The safety upgrade will replace the bold sleeve to prevent mis-assembly of the bolt, which might occur on the affected rifles. Such mis-assembly might result in a hazardous condition in which the rifle can be accidentally discharged without the bolt being fully engaged, causing severe injury. These rifles were distributed by Smith & Wesson, O.F. Mossberg and Interarms. Howa warned that, if you own one, stop using the rifle immediately and go to regcen.com/howa/index.html or call Howa at 800-456-5131 to receive a Bolt Return Kit. Only the bolt sleeve is upgraded, you do NOT need to ship your rifle or barreled action to Howa.