If it feeds and ejects OK, then the problem is in the gas system. Operate the action via pumping the action rod (under the barrel) manually. If the action can be cycled by hand, but not via firing, it's most likely that the gas operating system is inoperative.įield strip the rifle by withdrawing the bolt & rotating the barreled action up & back, out of the stock after the mag and the bottom screw is removed. The letters that were stamped inside on the top inside of the receiver were: 'B', 'L', 'N', or 'X'. These letters were assigned to various repair centers and although not important as the shop ID, it is important in helping you determine if the repair was made. Upon completion of the recall/repair, the shop doing the work was to have test fired the gun and to then stamp an assigned letter on the inside top of the receiver as seen through the magazine well with the bolt retracted. The new style is similar on the front and back but in the front midsection it has two flats milled, one on each side making the center section much stronger. The old firing pin was lathe turned - round.

This is a dedicated line/number for owners of the Winchester 100 concerning the firing pin recall. You can obtain additional info from Winchester at 1-80. Winchester advised to send the gun to a authorized service center for the pin replacement. Winchester advised against use of the firearm until a replacement pin could be installed. If this occurs, the firearm may fire before the action is locked causing damage to the firearm and injury to the shooter and/or bystanders.Ī new firing pin was designed to replace the original pin. In short, it advised that the firing pin may break due to use and metal fatigue and become lodged in the breech bolt face. The model 100 recall was issued as notice 7-1990 by Winchester. Winchester contracted a gunshop in upper New York State to handle the firing pin upgrades, during the recall. The front swivel, used to take down the rifle by removing, IIRC, has been converted from a standard to a QD or replaced by a QD, along with the rear. If the Model 100 I looked at on GB is the same one, either the stock is a replacement or the original has been rasped down & recheckered, as the checkering pattern is not the standard Winchester pre-64 pattern used on those rifles.

Winchester 100 recall firing pin