WINCHESTER
MODEL 490,
.22 CALIBER, SEMIAUTOMATIC RIFLES
RECALL: These rifles are the subject of unintentional discharge problems. Redesigned parts are available by contacting Winchester.
Winchester Firearms (801) 876-3440
U.S. Repeating Arms Company, Inc.
275 Winchester Avenue,
Morgan, UT 84050
Source:
AFTE Journal, March 1976; Volume 8, Number 1:28
Je pense c'est quel'que chosse avec le safety et le firing pin. Selon google j'ai trouve le suivant