Retired W4
Bearcat
Way back in 1976 I purchased a Mini-14 and owned another 180 series several years ago. As I remember, the 180 did not have the little sliding door on the left side of the receiver for the hold open device. I believe another difference was walnut Vs birch and metal butt plate Vs plastic. Were there any other changes made on the 181? I recently came into possession of an as new 181 and it has a wood upper hand guard. Is that correct?