This Remington manufactured early variation action bar is for the model 572 Fieldmaster slide action rimfire rifle with the early breech bolt assembly which features the pivoting block on the left side of the bolt. This action bar is in very good condition with honest wear. (file photo)

Note: Remington model 572 Fieldmaster rimfire rifles with the following date codes (month and year of manufacture) have been observed with this part:

Dates: BB (January 1955), AB (March 1955) & WD (August 1957)