Browning 1-Piece Base. Blued.

Models include:
.222 & .308 Browning Action; Model 1672
Browning .222R & .222RM Short Action; Model 1673
Browning .243W & ..308W with 8.5” Action; Model 8217
Browning BAR Semi-Auto High Power Rifle; Model 8017
Browning Short Action; Code BBSA
Browning Standard FN Mauser Actions; Model 8117, Code FN